JP2004123702A - Indoor hygienic vermin-exterminating agent and method for exterminating indoor hygienic vermin - Google Patents

Indoor hygienic vermin-exterminating agent and method for exterminating indoor hygienic vermin Download PDF

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JP2004123702A
JP2004123702A JP2003156248A JP2003156248A JP2004123702A JP 2004123702 A JP2004123702 A JP 2004123702A JP 2003156248 A JP2003156248 A JP 2003156248A JP 2003156248 A JP2003156248 A JP 2003156248A JP 2004123702 A JP2004123702 A JP 2004123702A
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Japan
Prior art keywords
indoor
insecticide
indoor sanitary
absorbent core
exterminating
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JP2003156248A
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Japanese (ja)
Inventor
Yoshiaki Nagaoka
長岡 義明
Yoko Imaizumi
今泉 洋子
Takahiro Hasegawa
長谷川 隆啓
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Earth Corp
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Earth Chemical Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To obtain an indoor hygienic vermin-exterminating agent suitable for exterminating the indoor hygienic vermin by utilizing a heat-transpiring method, and to provide a method for exterminating the indoor hygienic vermin. <P>SOLUTION: The indoor hygienic vermin-exterminating agent 7 is used as an insecticide in the heat-transpiring method by immersing a part of liquid-sucking core 1 into an insecticide liquid, heating another part of the liquid-sucking core 1 for transpiring the sucked insecticide liquid containing a fluorobenzyl ester compound as an active ingredient. The method for exterminating is provided by immersing the part of the liquid-sucking core 1 into the indoor hygienic vermin-exterminating agent 7 consisting of the insecticide liquid containing the above active ingredient, for sucking the indoor hygienic vermin-exterminating agent 7 in the liquid-sucking core 1, and heating the other part of the liquid-sucking core 1 for transpiring the sucked indoor hygienic vermin-exterminating agent. <P>COPYRIGHT: (C)2004,JPO

Description

【0001】
【発明の属する技術分野】
本発明は、吸液芯を利用する加熱蒸散方法において殺虫液として使用する屋内衛生害虫駆除剤および屋内衛生害虫駆除方法に関する。
【0002】
【従来の技術】
(+)1R−トランス−2,2−ジメチル−3−(2,2−ジクロロビニル)−シクロプロパンカルボン酸2,3,5,6−テトラフルオロベンジル等のフルオロベンジルエステル化合物が低毒性の殺虫剤としてスプレー剤などに使用できることが知られている(例えば、特許文献1参照)。
【0003】
しかしながら、吸液芯を用いる加熱蒸散殺虫方法において、ハエ、ゴキブリ、ノミ、ダニ、衣類害虫などの屋内衛生害虫の駆除に特に有効な加熱蒸散用の駆除剤は知られていない。
【0004】
【特許文献1】
特開昭63−203649号公報
【0005】
【発明が解決しようとする課題】
本発明の目的は、加熱蒸散方法を利用して屋内衛生害虫を駆除するのに好適な屋内衛生害虫駆除剤および屋内衛生害虫駆除方法を提供することである。
【0006】
【課題を解決するための手段】
本発明者らは、屋内衛生害虫の駆除に有効な殺虫成分および殺虫方法について種々検討を重ねた結果、吸液芯を使用する加熱蒸散方法にてフルオロベンジルエステル化合物を蒸散させると、驚くべきことに、他の殺虫成分を用いた場合と比較して、少ない揮散量で速やかに高い屋内衛生害虫駆除効果が得られることを見出し、本発明を完成するに至った。
【0007】
すなわち、本発明の屋内衛生害虫駆除剤は、殺虫液中に吸液芯の一部を浸漬して殺虫液を吸液芯内に吸液すると共に、前記吸液芯の他部を加熱して、吸液した殺虫液を蒸散させる加熱蒸散方法において殺虫液として用いられるものであって、有効成分としてフルオロベンジルエステル化合物を含有することを特徴とする。
【0008】
また、本発明の屋内衛生害虫駆除方法は、有効成分としてフルオロベンジルエステル化合物を含有する殺虫液からなる屋内衛生害虫駆除剤中に吸液芯の一部を浸漬して前記屋内衛生害虫駆除剤を吸液芯内に吸液すると共に、前記吸液芯の他部を加熱して、吸液した屋内衛生害虫駆除剤を蒸散させることを特徴とする。
【0009】
【発明の実施の形態】
以下、本発明の屋内衛生害虫駆除剤および屋内衛生害虫駆除方法を詳細に説明する。本発明の屋内衛生害虫駆除剤は、有効成分として所定のフルオロベンジルエステル化合物を含有する加熱蒸散用の液剤である。
【0010】
上記フルオロベンジルエステル化合物としては、2,3,5,6−テトラフルオロベンジル 2,2−ジメチル−3−(2,2−ジクロロビニル)−シクロプロパンカルボキシラート、2,3,5,6−テトラフルオロ−4−メトキシメチルベンジル 2,2−ジメチル−3−(1−プロペニル)−シクロプロパンカルボキシラート、2,3,5,6−テトラフルオロ−4−メチルベンジル 2,2−ジメチル−3−(1−プロペニル)−シクロプロパンカルボキシラート、2,3,5,6−テトラフルオロ−4−メトキシメチルベンジル 2,2−ジメチル−3−(2−メチル−1−プロペニル)−シクロプロパンカルボキシラートなどが例示される。
【0011】
本発明においては、これらのフルオロベンジルエステル化合物のうち、特に2,3,5,6−テトラフルオロベンジル 2,2−ジメチル−3−(2,2−ジクロロビニル)−シクロプロパンカルボキシラート(一般名「トランスフルトリン」)および/または2,3,5,6−テトラフルオロ−4−メトキシメチルベンジル 2,2−ジメチル−3−(1−プロペニル)−シクロプロパンカルボキシラート(一般名「メトフルトリン」)を使用するのが好ましい。
【0012】
本発明における上記フルオロベンジルエステル化合物は、化学構造上、光学異性体や幾何異性体が存在するが、各異性体の一方のみであってもよく、または両異性体の任意な混合物であってもよい。
【0013】
本発明の屋内衛生害虫駆除剤は、上記フルオロベンジルエステル化合物を溶媒に溶解または分散させ、これに必要に応じて安定剤、揮散調整剤、紫外線防止剤、着色剤などの添加剤を添加することにより得ることができる。フルオロベンジルエステル化合物の含有量は、ハエ類などの屋内衛生害虫の駆除に有効な揮散量を得る上で、屋内衛生害虫駆除剤総量に対して1〜20重量%、好ましくは2〜10重量%、より好ましくは3〜5重量%であるのがよい。また、本発明の効果を奏する限り、必要に応じて、屋内衛生害虫駆除剤に他の殺虫剤、殺菌剤、芳香剤、消臭剤、防黴剤などを配合してもよい。
【0014】
前記溶媒としては無機溶媒や有機溶媒が挙げられる。無機溶媒としては、例えば精製水、アルカリイオン水、水道水などの水が挙げられる。有機溶媒としては、例えばn−パラフィン、イソパラフィンなどの沸点範囲が150〜350℃の脂肪族炭化水素(パラフィン系炭化水素および不飽和脂肪族炭化水素)の他、シクロパラフィン、ナフテン系などの脂環式炭化水素、グリセリン、プロピレングリコール、メタノール、イソプロパノール、1−オクノール、1−ドデカノールなどのアルコール類、アセトン、アセトフェノンなどのケトン類、ジヘキシルエーテル、ジエチレングリコールジエチルエーテル、ジエチレングリコールモノブチルエーテルなどのエーテル類、アジピン酸ジオクチル、マロン酸ジエチル、フタル酸ジエチルなどのエステル類、キシレン、クロルセン、クロロホルム、シリコーンオイルなどが挙げられ、これらは2種以上を混合して使用することもできる。また、上記の無機溶媒と有機溶媒との混合溶媒を使用することもできる。さらに、必要に応じて各種の界面活性剤などを配合してもよい。
【0015】
揮散調整剤としては、例えば3,5−ジ−t−ブチル−4−ヒドロキシトルエン、3−t−ブチル−4−ヒドロキシアニソール、3,5−ジ−t−ブチル−4−ヒドロキシアニソール、メルカプトベンズイミダゾール、ジラウリル−チオ−ジ−プロピオネート、3−t−ブチル−4−メトキシフェノール、2,6−ジ−t−ブチル−4−エチルフェノール、ステアリル−β−(3,5−ジ−t−ブチル−4−ヒドロキシフェニル)プロピオネート、α−トコフェロール、アスコルビン酸、エリソルビン酸、2,2’−メチレン−ビス−(6−t−ブチル−4−メチルフェノール)、2,2’−メチレン−ビス− (6−t−ブチル−4−エチルフェノール)、4,4’−メチレン−ビス−(2,6−ジ−t−ブチルフェノール)、4,4’−ブチリデン−ビス−(6−t−ブチル−4−メチルフェノール)、4,4’−チオ−ビス−(6−t−ブチル−4−メチルフェノール)、1,1−ビス−(4−ヒドロキシフェニル)シクロヘキサン、1,3,5−トリメチル−2,4,6−トリス(3,5−ジ−t−ブチル−4−ヒドロキシベンジル)ベンゼン、トリス(2−メチル−4−ヒドロキシ−5−t−ブチルフェニル)ブタン、テトラキス[メチレン(3,5−ジ−t−ブチル−4−ヒドロキシヒドロシンナメート)]メタン、フェニル−β−ナフチルアミン、N,N’−ジフェニル−p−フェニレンジアミン、2,2,4−トリメチル−1,2−ジヒドロキノンポリマー、6−エトキシ−2,2,4−トリメチル−1,2−ジヒドロキノリンなどが挙げられる。これらの揮散調整剤は1種のみを用いてもよく、あるいは2種以上を併用してもよい。これらの揮散調整剤は屋内衛生害虫駆除剤及び/又は吸液芯に配合することによって吸液芯の目詰まりを防止する作用や容器内の圧力を調整する作用もある。
【0016】
これらの各添加剤は必要最小限の添加量でよく、通常、屋内衛生害虫駆除剤総量に対して安定剤が約5重量%以下、揮散調整剤が約5重量%以下、紫外線防止剤が約5重量%以下であればよい。
【0017】
着色剤としては、例えばアゾ系染料、アントラキノン系染料、およびこれらの染料の2種以上の組み合わせから選ぶことができる。具体的には、例えば橙色403号、緑色202号、紫色201号、赤色225号、黄色204号等の色素が挙げられる。
【0018】
着色剤の添加量は、屋内衛生害虫駆除剤総量に対して0.001〜0.1重量%、好ましくは0.01〜0.1重量%であるのがよい。
【0019】
また、上記した添加剤以外にも、通常用いられている効力増強剤、揮散率向上剤、難燃剤、消臭剤、香料等の各種添加剤も任意に添加することができる。効力増強剤としてはピペロニルブトキサイド、N−プロピルイゾーム、MGK−264、サイネピリン222、サイネピリン500、リーセン384、IBTA、IBTE、S421などを、揮散率向上剤としてはフエネチルイソチオシアネート、ハイミツクス酸ジメチルなどを、難燃剤としてはリン酸トリクレジル、塩素化パラフィン、ハイドロフルオロエーテル(住友スリーエム社製の品名HFE−7100)などを、消臭剤としてはラウリル酸メタクリレート(LMA)などを、香料としてはシトラール、シトロネラールなどをそれぞれ例示できる。
【0020】
図1は、本発明において使用される、吸液芯を備えた加熱蒸散装置の一例を示す断面図である。同図に示すように、この加熱蒸散装置は、吸液芯1を支持するための芯支持体2を有する薬液収容容器3と、この容器3内に挿入され上部が容器から突出した吸液芯1と、この吸液芯1の上側面部を間接的に加熱するための中空円筒状発熱体4と、この発熱体4を支持するための支持部5および支持脚6とを有する。この薬液収容容器3内には殺虫液からなる本発明の屋内衛生害虫駆除剤7が収容されている。発熱体4は、これに通電して発熱させるためのコード(図示せず)を有しているが、コードレスタイプでもよい。なお、図面中、8は外気取入口、9は周隙を示している。このような加熱蒸散装置は、例えば特公昭52−12106号公報、実開昭58−45670号公報などに記載されている。
【0021】
吸液芯1としては、従来より薬液の加熱蒸散を目的として使用されているものが特に制限なく使用可能であり、例えばフェルト、木綿、パルプ、不織布、石綿、無機質成形物などが挙げられ、さらに合成樹脂の多孔質芯や合成繊維束を樹脂で固めた芯なども使用可能である。また、毛細管などの中空状吸液芯であってもよい。
【0022】
前記無機質成形物の具体例としては、磁器多孔質、グラスファイバー、石綿などの無機繊維を石膏やベントナイトなどの結合剤で固めたものや、カオリン、活性白土、タルク、ケイソウ土、クレー、パーライト、石膏、ベントナイト、アルミナ、シリカ、アルミナシリカ、チタニウム、ガラス質火山岩焼成粉末、ガラス質火山灰焼成粉末などの鉱物質粉末を単独でまたは木粉、炭粉、活性炭などと共に糊剤、例えばデキストリン、デンプン、アラビアゴム、CMCなどで固めたものを例示できる。例えば、前記鉱物質粉末を用いる場合には、この鉱物質粉末100重量部に、木粉または該木粉に等重量までの炭粉および/または活性炭を混合した混合物10〜300重量部を配合し、さらに糊剤を全吸液芯重量の5〜25重量%となるまで混合し、さらに水を加えて練合後、押出成形し乾燥することにより吸液芯1を得ることができる。
【0023】
また、前記発熱体4としては、通常、通電により発熱する発熱体(例えば、PTCヒータ(正特性サーミスタ)、セラミックヒータなど)が汎用されているが、これに限定されることなく、例えば空気酸化発熱材、白金触媒などを利用した発熱材などの公知のいかなる発熱体であってもかまわない。
【0024】
加熱温度は、フルオロベンジルエステル化合物の単位時間当りの揮散量を考慮して決定され、通常、発熱体4の表面温度が約70℃〜150℃、好ましくは85℃〜145℃の範囲とされ、これは吸液芯1の表面温度約60℃〜135℃、好ましくは約70℃〜130℃に相当する。また、フルオロベンジルエステル化合物の揮散量は、例えば空間容積約40m当たり、通常、1〜50mg/12時間程度、好ましくは5〜25mg/12時間程度に調整するのがよい。
【0025】
上記のような吸液芯1を備えた加熱蒸散装置の薬液収容容器3に、殺虫液からなる本発明の屋内衛生害虫駆除剤7を収容し、これを吸液芯1内に吸液すると共に、発熱体4で吸液芯1の上側面部を加熱することによって、屋内衛生害虫駆除剤7中の有効成分であるフルオロベンジルエステル化合物が揮散される。その結果、ハエに対する特に顕著な駆除効果が得られる。
【0026】
本発明において駆除対象となる屋内衛生害虫としては、特に制限されないが、例えばイエバエ種、ヒメイエバエ種、オオクロバエ種、キンバエ種、オビキンバエ種、サシバエ種、チョウバエ種などのハエ類;コバネゴキブリ、ワモンゴキブリ、チャバネゴキブリなどのゴキブリ類、ハマダラカ、アカイエカ、ユスリカなどの蚊;イガ、コイガなどの衣類害虫;イエダニ、ツメダニ、コナダニなどのダニ類;さらにヌカカ、アブ、ノミ、ナンキンムシなどがあげられ、特にハエ類の駆除に好適である。
なお、本発明の屋内衛生害虫駆除剤が使用される屋内としては、例えばテント、ログハウス、キャンピングカー、倉庫、工場、居室、車両、鉄道、船舶、航空機などが挙げられる。
【0027】
【実施例】
以下、実施例および比較例を挙げて本発明の屋内衛生害虫駆除剤を詳細に説明するが、本発明は以下の実施例のみに限定されるものではない。
【0028】
実施例1〜3および比較例1,2
<屋内衛生害虫駆除剤の調製>
下記処方にて各屋内衛生害虫駆除剤50mLを調製した。
実施例1:n−パラフィン(中央化成(株)製NP−SH)中に前記トランスフルトリン1重量%を含有
実施例2:n−パラフィン(中央化成(株)製NP−SH)中に前記トランスフルトリン2重量%を含有
実施例3:n−パラフィン(中央化成(株)製NP−SH)中に前記メトフルトリンの0.5重量%を含有
比較例1:n−パラフィン(中央化成(株)製NP−SH)中にdl,d−T−80アレスリン(住友化学工業(株)製の「ピナミンフォルテ(商品名)」)4重量%を含有
比較例2:n−パラフィン(中央化成(株)製NP−SH)中にd,d−T−80プラレトリン(住友化学工業(株)製の「エトック(商品名)」)1重量%を含有
【0029】
<揮散量の測定および原体のLD50の測定>
得られた各屋内衛生害虫駆除剤45mLを薬液収容容器に充填し、これをアース製薬(株)製の加熱蒸散装置である「アースノーマット(商品名)」に装着した。この状態で吸液芯の上部を表面温度120℃に加熱したときの有効成分の揮散量を測定した。その結果を表1に示す。揮散量は、上記加熱蒸散装置から揮散した有効成分をシリカゲルカラムに吸引捕集し、このシリカゲルをジエチルエーテルで抽出し、濃縮後、ガスクロマトグラフにて定量することにより求めた。なお、揮散量は、加熱開始から12時間経過までの揮散量をいう。また、各有効成分の原体のイエバエに対する活性(供試ハエの50%が死ぬ薬量LD50)を局所施用法にて調べた。その結果を表1に併せて示す。ここで、局所施用法とは、所定濃度に調製したアセトン溶液を麻酔したハエに滴下することによって供試ハエの半数が致死する濃度(薬量/ハエ一頭当たり)を求める方法である。
【0030】
【表1】

Figure 2004123702
【0031】
<効力試験>
各屋内衛生害虫駆除剤が充填された薬液収容容器を装着した上記加熱蒸散装置を床面積6畳の密閉室内(空間容積約25m)にそれぞれ設置し、吸液芯の上部を表面温度約120℃に加熱した。前記密閉室内には、伝研系イエバエ(薬剤感受性,雌成虫)10頭を入れたかごを室内の4ヶ所(高さ75cmに2ヶ所と150cmに2ヶ所)に予め吊り下げておき、これらの供試バエが蒸散開始と同時に有効成分に曝露されるようにした。このようにしてイエバエのノックダウン率と経過時間との関係を調べた。その結果を表2および図2に示す。
【0032】
【表2】
Figure 2004123702
【0033】
表1から、実施例1における有効成分の原体は、局所施用法でのイエバエに対する活性(LD50)が比較例2における有効成分の原体とほぼ同等である。実施例3における有効成分の原体は、局所施用法でのイエバエに対する活性(LD50)が比較例2における有効成分の原体とほぼ同等である。また、加熱蒸散時の揮散量は、実施例1と比較例2は同等であり、実施例3は比較例2に対して約1/2であり、実施例1〜3は比較例1よりも少量である(表1を参照)。ところが、表2および図2から明らかなように、吸液芯を用いる加熱蒸散方法を用いると、比較例1,2と比較して、実施例1〜3の屋内衛生害虫駆除剤は、蒸散初期からイエバエに対する高い駆除効果を有していることがわかる。これらのことから、吸液芯を使用する加熱蒸散方法において、有効成分としてトランスフルトリンまたはメトフルトリンを用いると、少量で速やかに屋内衛生害虫を駆除できることがわかる。
【0034】
<基礎効力試験>
図3に示す通気装置18を用いて基礎効力試験を行った。同図に示す通気装置18は、直径20cm、高さ20cmの透明シリンダー11,12と直径20cm、高さ43cmのシリンダー13,14を重ね、これらの間にゴムパッキン15,15,15を配置し、さらにシリンダー12の上下に12メッシュのポリ塩化ビニリデン製の網を配置したものである。シリンダー12内には供試ハエ(伝研系イエバエ(薬剤感受性,雌成虫))を16〜20頭入れ、最下段には加熱蒸散装置17(前出の「アースノーマット(商品名)」)を架台20の上に配置した。加熱蒸散装置17には、実施例1,比較例1および比較例2の屋内衛生害虫駆除剤45mLを充填した薬液収容容器をそれぞれ装着した。また、電力はコード19を通じて加熱蒸散装置17に供給される。
【0035】
この状態で吸液芯の上部を表面温度120℃に加熱し、イエバエを屋内衛生害虫駆除剤の有効成分中に20分間曝露して、イエバエのノックダウン率と経過時間との関係を調べた。このようにして20分間曝露した後、供試ハエを回収し、清浄な容器に移し替え、これに水を入れて別室に保管し、24時間後の致死率を調べた。結果を表3に示す(各値は3回の平均値)。なお、表3中に記載の「KT50」とは、供試ハエの半数がノックダウンするまでの時間をいい、「KT90」とは、供試ハエの90%がノックダウンするまでの時間をいう。
【0036】
【表3】
Figure 2004123702
【0037】
表3から、吸液芯を用いる加熱蒸散方法を用いると、比較例1,2と比較して、実施例1の屋内衛生害虫駆除剤は、蒸散初期からノックダウン率が高い(速効性がある)だけでなく、致死率も高い(殺虫力がある)ことから、イエバエなどの屋内衛生害虫に対する高い駆除効果を有していることがわかる。
【0038】
【発明の効果】
本発明によれば、フルオロベンジルエステル化合物を有効成分とする屋内衛生害虫駆除剤を吸液芯を利用して加熱蒸散させるときには、屋内衛生害虫に対し少ない揮散量で速やかに高い駆除効果が得られる。特に、本発明の屋内衛生害虫駆除剤は、ハエ類に対するノックダウン効果にすぐれる。
【図面の簡単な説明】
【図1】本発明において使用される、吸液芯を備えた加熱蒸散装置の一例を示す概略断面図である。
【図2】実施例1〜3および比較例1,2のノックダウン率の測定結果を示すグラフである。
【図3】実施例1および比較例1,2の基礎効力試験において用いた通気装置を示す概略図である。
【符号の説明】
1 吸液芯
2 芯支持体
3 薬液収容容器
4 中空円筒状発熱体
5 支持部
6 支持脚[0001]
TECHNICAL FIELD OF THE INVENTION
TECHNICAL FIELD The present invention relates to an indoor sanitary pest control agent and an indoor sanitary pest control method used as an insecticide in a heat evaporation method using an absorbent core.
[0002]
[Prior art]
(+) Fluorobenzyl ester compounds such as 2,3,5,6-tetrafluorobenzyl, such as (R) 1R-trans-2,2-dimethyl-3- (2,2-dichlorovinyl) -cyclopropanecarboxylate, have low toxicity. It is known that the composition can be used as a spraying agent (for example, see Patent Document 1).
[0003]
However, in the heat-transpiration insecticidal method using an absorbent core, there is no known heat-evaporation pesticide that is particularly effective in controlling indoor sanitary pests such as flies, cockroaches, fleas, mites, and clothing pests.
[0004]
[Patent Document 1]
JP-A-63-203649 [0005]
[Problems to be solved by the invention]
An object of the present invention is to provide an indoor sanitary pest control agent and an indoor sanitary pest control method that are suitable for controlling indoor sanitary pests using a heat evaporation method.
[0006]
[Means for Solving the Problems]
The present inventors have conducted various studies on insecticide components and insecticide methods effective for controlling indoor sanitary insect pests.As a result, it is surprising that when a fluorobenzyl ester compound is evaporated by a heat evaporation method using a liquid absorbent core, In addition, they have found that a high indoor sanitary insect control effect can be obtained quickly with a small amount of volatilization as compared with the case where other insecticidal components are used, and the present invention has been completed.
[0007]
That is, the indoor sanitary insecticide of the present invention absorbs the insecticidal liquid into the liquid absorbent core by immersing a part of the liquid absorbent core in the insecticide liquid, and heats the other part of the liquid absorbent core. The method is used as an insecticide in a heat evaporation method in which the absorbed insecticide is evaporated, and is characterized by containing a fluorobenzyl ester compound as an active ingredient.
[0008]
Further, the indoor sanitary pest control method of the present invention is characterized in that a part of the liquid absorbent core is immersed in an indoor sanitary pest control composition comprising a pesticide solution containing a fluorobenzyl ester compound as an active ingredient, thereby forming the indoor sanitary pest control composition. In addition to absorbing the liquid into the absorbent core, the other part of the absorbent core is heated to evaporate the absorbed indoor sanitary insecticide.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the indoor sanitary pest control agent and the indoor sanitary pest control method of the present invention will be described in detail. The indoor sanitary insecticide of the present invention is a liquid preparation for heat evaporation containing a predetermined fluorobenzyl ester compound as an active ingredient.
[0010]
Examples of the fluorobenzyl ester compound include 2,3,5,6-tetrafluorobenzyl 2,2-dimethyl-3- (2,2-dichlorovinyl) -cyclopropanecarboxylate and 2,3,5,6-tetrafluorobenzyl ester compound Fluoro-4-methoxymethylbenzyl 2,2-dimethyl-3- (1-propenyl) -cyclopropanecarboxylate, 2,3,5,6-tetrafluoro-4-methylbenzyl 2,2-dimethyl-3- ( 1-propenyl) -cyclopropanecarboxylate, 2,3,5,6-tetrafluoro-4-methoxymethylbenzyl 2,2-dimethyl-3- (2-methyl-1-propenyl) -cyclopropanecarboxylate and the like Is exemplified.
[0011]
In the present invention, among these fluorobenzyl ester compounds, in particular, 2,3,5,6-tetrafluorobenzyl 2,2-dimethyl-3- (2,2-dichlorovinyl) -cyclopropanecarboxylate (common name) "Transfluthrin") and / or 2,3,5,6-tetrafluoro-4-methoxymethylbenzyl 2,2-dimethyl-3- (1-propenyl) -cyclopropanecarboxylate (generic name "methfluthrin") It is preferred to use
[0012]
The above-mentioned fluorobenzyl ester compound in the present invention has optical isomers and geometric isomers on the chemical structure, but may be only one of the isomers or an arbitrary mixture of both isomers. Good.
[0013]
The indoor sanitary pest control agent of the present invention is obtained by dissolving or dispersing the above-mentioned fluorobenzyl ester compound in a solvent, and adding additives such as a stabilizer, a volatilization regulator, an ultraviolet ray inhibitor, and a coloring agent as necessary. Can be obtained by The content of the fluorobenzyl ester compound is from 1 to 20% by weight, preferably from 2 to 10% by weight, based on the total amount of the indoor sanitary pest control agent, in order to obtain a volatile amount effective for controlling indoor sanitary pests such as flies. And more preferably 3 to 5% by weight. Further, as long as the effects of the present invention are exhibited, other insecticides, bactericides, fragrances, deodorants, fungicides, and the like may be added to the indoor sanitary insecticide as needed.
[0014]
Examples of the solvent include an inorganic solvent and an organic solvent. Examples of the inorganic solvent include water such as purified water, alkaline ionized water, and tap water. Examples of the organic solvent include aliphatic hydrocarbons having a boiling range of 150 to 350 ° C. (paraffinic hydrocarbons and unsaturated aliphatic hydrocarbons) such as n-paraffin and isoparaffin, and alicyclics such as cycloparaffins and naphthenes. Formula hydrocarbons, alcohols such as glycerin, propylene glycol, methanol, isopropanol, 1-octanol and 1-dodecanol; ketones such as acetone and acetophenone; ethers such as dihexyl ether, diethylene glycol diethyl ether and diethylene glycol monobutyl ether; adipic acid Esters such as dioctyl, diethyl malonate and diethyl phthalate, xylene, chlorcene, chloroform, silicone oil and the like, and these can be used as a mixture of two or more kinds. Further, a mixed solvent of the above-mentioned inorganic solvent and organic solvent can also be used. Further, various surfactants and the like may be added as necessary.
[0015]
Examples of the volatilization modifier include 3,5-di-t-butyl-4-hydroxytoluene, 3-t-butyl-4-hydroxyanisole, 3,5-di-t-butyl-4-hydroxyanisole, mercaptobenz Imidazole, dilauryl-thio-di-propionate, 3-t-butyl-4-methoxyphenol, 2,6-di-t-butyl-4-ethylphenol, stearyl-β- (3,5-di-t-butyl -4-hydroxyphenyl) propionate, α-tocopherol, ascorbic acid, erythorbic acid, 2,2′-methylene-bis- (6-t-butyl-4-methylphenol), 2,2′-methylene-bis- ( 6-t-butyl-4-ethylphenol), 4,4'-methylene-bis- (2,6-di-t-butylphenol), 4,4'-butylide -Bis- (6-t-butyl-4-methylphenol), 4,4'-thio-bis- (6-t-butyl-4-methylphenol), 1,1-bis- (4-hydroxyphenyl) Cyclohexane, 1,3,5-trimethyl-2,4,6-tris (3,5-di-t-butyl-4-hydroxybenzyl) benzene, tris (2-methyl-4-hydroxy-5-t-butyl) Phenyl) butane, tetrakis [methylene (3,5-di-tert-butyl-4-hydroxyhydrocinnamate)] methane, phenyl-β-naphthylamine, N, N′-diphenyl-p-phenylenediamine, 2,2,2 4-trimethyl-1,2-dihydroquinone polymer, 6-ethoxy-2,2,4-trimethyl-1,2-dihydroquinoline and the like. These volatilization modifiers may be used alone or in combination of two or more. These volatilization regulators also have an effect of preventing clogging of the liquid absorbent core and a function of adjusting the pressure in the container by being mixed with the indoor sanitary insecticide and / or the liquid absorbent core.
[0016]
Each of these additives may be added in the minimum necessary amount. Usually, the stabilizer is about 5% by weight or less, the volatilization modifier is about 5% by weight or less, and the ultraviolet ray inhibitor is about 5% by weight based on the total amount of the indoor sanitary insecticide. What is necessary is just 5 weight% or less.
[0017]
The colorant can be selected, for example, from azo dyes, anthraquinone dyes, and combinations of two or more of these dyes. Specific examples include dyes such as orange No. 403, green No. 202, purple No. 201, red No. 225, yellow No. 204, and the like.
[0018]
The amount of the colorant added is 0.001 to 0.1% by weight, preferably 0.01 to 0.1% by weight, based on the total amount of the indoor sanitary insecticide.
[0019]
In addition to the above-mentioned additives, various additives such as an efficacy enhancer, a volatilization rate improver, a flame retardant, a deodorant, a fragrance and the like which are usually used can be arbitrarily added. Examples of the potency enhancer include piperonyl butoxide, N-propylisome, MGK-264, sinepiline 222, sinepiline 500, lysene 384, IBTA, IBTE, S421, and the like. As the volatilization rate improver, phenethyl isothiocyanate, Dimethyl hymitxate, flame retardants such as tricresyl phosphate, chlorinated paraffin, hydrofluoroether (product name: HFE-7100 manufactured by Sumitomo 3M), and deodorants such as lauryl methacrylate (LMA). Examples thereof include citral and citronellal.
[0020]
FIG. 1 is a cross-sectional view showing an example of a heating and evaporating apparatus having a liquid absorbing core used in the present invention. As shown in FIG. 1, the heat evaporation apparatus includes a chemical solution container 3 having a core support 2 for supporting a liquid absorbent core 1, a liquid absorbent core inserted into the container 3 and having an upper portion protruding from the container. 1, a hollow cylindrical heating element 4 for indirectly heating the upper surface of the liquid absorbing core 1, and a support portion 5 and a supporting leg 6 for supporting the heating element 4. In the chemical solution container 3, the indoor sanitary insecticide 7 of the present invention, which is composed of an insecticide solution, is housed. The heating element 4 has a cord (not shown) for energizing the heating element 4 to generate heat, but may be a cordless type. In the drawings, reference numeral 8 denotes an outside air intake, and reference numeral 9 denotes a peripheral space. Such a heat evaporation apparatus is described in, for example, Japanese Patent Publication No. 52-12106, Japanese Utility Model Publication No. 58-45670, and the like.
[0021]
As the absorbent core 1, those conventionally used for the purpose of heating and evaporating a chemical solution can be used without particular limitation, and examples thereof include felt, cotton, pulp, nonwoven fabric, asbestos, and inorganic molded products. A porous core of a synthetic resin or a core obtained by solidifying a synthetic fiber bundle with a resin can also be used. Further, a hollow liquid absorbent core such as a capillary tube may be used.
[0022]
Specific examples of the inorganic molded article include porous ceramics, glass fibers, inorganic fibers such as asbestos hardened with a binder such as gypsum or bentonite, kaolin, activated clay, talc, diatomaceous earth, clay, pearlite, Gypsum, bentonite, alumina, silica, alumina silica, titanium, vitreous volcanic rock calcined powder, mineral powder such as vitreous volcanic ash calcined powder alone or together with wood flour, charcoal powder, activated carbon and the like paste, for example, dextrin, starch, Examples thereof include those hardened with gum arabic, CMC and the like. For example, when the mineral powder is used, 10 to 300 parts by weight of the wood powder or a mixture of the wood powder and an equal weight of charcoal powder and / or activated carbon is mixed with 100 parts by weight of the mineral powder. Further, the sizing agent is mixed until it becomes 5 to 25% by weight of the total liquid absorbing core weight, water is further added, kneaded, extruded and dried to obtain the liquid absorbing core 1.
[0023]
Further, as the heating element 4, a heating element (for example, a PTC heater (positive characteristic thermistor), a ceramic heater, or the like) that generally generates heat when energized is generally used. However, the heating element 4 is not limited to this. Any known heating element such as a heating material, a heating material using a platinum catalyst or the like may be used.
[0024]
The heating temperature is determined in consideration of the volatilization amount of the fluorobenzyl ester compound per unit time, and usually, the surface temperature of the heating element 4 is set to about 70 ° C to 150 ° C, preferably 85 ° C to 145 ° C, This corresponds to a surface temperature of the absorbent core 1 of about 60 ° C to 135 ° C, preferably about 70 ° C to 130 ° C. Also, volatilization of fluorobenzyl ester compounds, for example, the space volume of about 40 m 3, per, 1 to 50 mg / 12 hours or so, and it is preferably adjusted to about 5 to 25 mg / 12 hours.
[0025]
The indoor sanitary insecticide 7 of the present invention made of an insecticide is accommodated in the chemical storage container 3 of the heating and evaporating apparatus provided with the liquid absorbent core 1 as described above, and the liquid is absorbed into the liquid absorbent core 1 and absorbed. By heating the upper surface of the absorbent core 1 with the heating element 4, the fluorobenzyl ester compound as an active ingredient in the indoor sanitary insecticide 7 is volatilized. As a result, a particularly remarkable control effect on flies is obtained.
[0026]
The indoor sanitary insect pests to be controlled in the present invention are not particularly limited, but for example, flies such as house fly species, Hime fly species, Bombfly spp., Flies fly spp. Mosquitoes such as cockroaches, anopheles, mosquitoes, and midges; clothing pests such as moths and moths; mites such as house mites, mites, mites; and mikas, flies, fleas, bedbugs, and the like. It is suitable.
In addition, the indoor where the indoor sanitary insecticide of the present invention is used includes, for example, a tent, a log house, a camper, a warehouse, a factory, a living room, a vehicle, a railroad, a ship, an aircraft, and the like.
[0027]
【Example】
Hereinafter, the indoor sanitary insecticide of the present invention will be described in detail with reference to Examples and Comparative Examples, but the present invention is not limited to only the following Examples.
[0028]
Examples 1 to 3 and Comparative Examples 1 and 2
<Preparation of indoor sanitary pest control agent>
According to the following formulation, 50 mL of each indoor sanitary insecticide was prepared.
Example 1: n-paraffin (NP-SH manufactured by Chuo Kasei Co., Ltd.) containing 1% by weight of the transfluthrin Example 2: n-paraffin (NP-SH manufactured by Chuo Kasei Co., Ltd.) Example 3 containing 2% by weight of transfluthrin Example 3: n-paraffin (NP-SH manufactured by Chuo Kasei Co., Ltd.) containing 0.5% by weight of the aforementioned metofluthrin Comparative Example 1: n-paraffin (Chuo Kasei Co., Ltd. Comparative Example 2: n-paraffin (Chuo Kasei Co., Ltd.) containing 4% by weight of dl, d-T-80 allethrin (“Pinamine Forte (trade name)” manufactured by Sumitomo Chemical Co., Ltd.) 1% by weight of d, d-T-80 praletrin (“ETOK (trade name)” manufactured by Sumitomo Chemical Co., Ltd.) in NP-SH manufactured by KK
<Measurement of LD 50 of the volatilization amount of measurement and original body>
45 mL of each of the obtained indoor sanitary pest control agents was filled in a chemical solution container, and this was mounted on an earth nomat (trade name), a heat evaporation device manufactured by Earth Pharmaceutical Co., Ltd. In this state, when the upper part of the liquid absorbent core was heated to a surface temperature of 120 ° C., the volatilization amount of the active ingredient was measured. Table 1 shows the results. The amount of volatilization was determined by collecting the active ingredient volatilized from the above-mentioned heat evaporation apparatus by suction on a silica gel column, extracting the silica gel with diethyl ether, concentrating the mixture, and quantifying the concentration by a gas chromatograph. The amount of volatilization refers to the amount of volatilization from the start of heating to the elapse of 12 hours. In addition, the activity of the drug substance of each active ingredient on the house fly (the dose LD 50 at which 50% of the test fly dies) was examined by a local application method. The results are shown in Table 1. Here, the topical application method is a method in which an acetone solution prepared at a predetermined concentration is dropped on an anesthetized fly to determine a concentration at which half of the test fly is lethal (dose / per fly).
[0030]
[Table 1]
Figure 2004123702
[0031]
<Efficacy test>
The above-mentioned heating and evaporating apparatus equipped with a chemical solution container filled with each indoor sanitary insecticide is installed in a closed room (space volume of about 25 m 3 ) with a floor area of 6 tatami mats, and the upper part of the liquid absorbent core is heated to a surface temperature of about 120 m 2. Heated to ° C. In the closed chamber, 10 cages of a house fly (drug-sensitive, female adult) were placed and suspended in four places (two places at 75 cm and two places at 150 cm) in advance. The test fly was exposed to the active ingredient simultaneously with the start of transpiration. Thus, the relationship between the knockdown rate of the house fly and the elapsed time was examined. The results are shown in Table 2 and FIG.
[0032]
[Table 2]
Figure 2004123702
[0033]
From Table 1, the active ingredient in Example 1 has almost the same activity (LD 50 ) against the housefly in the topical application method as the active ingredient in Comparative Example 2. The drug substance of the active ingredient in Example 3 has approximately the same activity (LD 50 ) against the housefly in the topical application method as the drug substance of the active ingredient in Comparative Example 2. In addition, the amount of volatilization at the time of heat evaporation was the same in Example 1 and Comparative Example 2, Example 3 was about 1/2 of Comparative Example 2, and Examples 1 to 3 were more than Comparative Example 1. Small amounts (see Table 1). However, as is clear from Table 2 and FIG. 2, when the heat evaporation method using the liquid absorbent core is used, the indoor sanitary insecticides of Examples 1 to 3 are compared with Comparative Examples 1 and 2, From this, it can be seen that it has a high control effect on house flies. From these facts, it can be seen that in the heat evaporation method using a liquid absorbent core, indoor transgenic pests can be quickly and quickly eliminated with a small amount by using transfluthrin or metofluthrin as an active ingredient.
[0034]
<Basic efficacy test>
A basic efficacy test was performed using the ventilation device 18 shown in FIG. In the ventilation device 18 shown in the figure, transparent cylinders 11 and 12 having a diameter of 20 cm and a height of 20 cm are overlapped with cylinders 13 and 14 having a diameter of 20 cm and a height of 43 cm, and rubber packings 15, 15 and 15 are arranged therebetween. Further, a 12 mesh polyvinylidene chloride net is arranged above and below the cylinder 12. In the cylinder 12, 16 to 20 test flies (Denken house fly (drug sensitive, female adult)) are placed, and a heating and evaporating device 17 (the above-mentioned "Earth Nomat (trade name)") is placed at the bottom. It was arranged on the gantry 20. The heating and evaporating apparatus 17 was equipped with a chemical solution container filled with 45 mL of the indoor sanitary insecticide of Example 1, Comparative Example 1 and Comparative Example 2. Electric power is supplied to the heating and evaporating device 17 through the cord 19.
[0035]
In this state, the upper part of the absorbent core was heated to a surface temperature of 120 ° C., and the housefly was exposed to an active ingredient of an indoor sanitary insecticide for 20 minutes to examine the relationship between the knockdown rate of the housefly and the elapsed time. After exposure for 20 minutes in this way, the test fly was collected, transferred to a clean container, filled with water, stored in a separate room, and examined for mortality after 24 hours. The results are shown in Table 3 (each value is an average of three times). It is to be noted that the "KT 50" described in Table 3, half of the test fly a good time to knock down, the "KT 90", time of up to 90% of the test flies to knock down Say.
[0036]
[Table 3]
Figure 2004123702
[0037]
From Table 3, when the heat transpiration method using the absorbent core is used, the indoor sanitary insecticide of Example 1 has a high knockdown rate from the beginning of transpiration (there is a rapid effect) as compared with Comparative Examples 1 and 2. ) As well as a high mortality (has an insecticidal power), indicating a high control effect on indoor sanitary pests such as house flies.
[0038]
【The invention's effect】
According to the present invention, when an indoor sanitary pest control agent containing a fluorobenzyl ester compound as an active ingredient is heated and evaporated using an absorbent core, a high control effect can be obtained quickly with a small amount of volatilization for indoor sanitary pests. . In particular, the indoor sanitary insecticide of the present invention is excellent in knockdown effect on flies.
[Brief description of the drawings]
FIG. 1 is a schematic cross-sectional view showing one example of a heating and evaporating apparatus having a liquid absorbing core used in the present invention.
FIG. 2 is a graph showing measurement results of knockdown rates of Examples 1 to 3 and Comparative Examples 1 and 2.
FIG. 3 is a schematic diagram showing a ventilation device used in a basic efficacy test of Example 1 and Comparative Examples 1 and 2.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Absorbent core 2 Core support 3 Chemical liquid container 4 Hollow cylindrical heating element 5 Support part 6 Support leg

Claims (6)

殺虫液中に吸液芯の一部を浸漬して殺虫液を吸液芯内に吸液すると共に、前記吸液芯の他部を加熱して、吸液した殺虫液を蒸散させる加熱蒸散方法において殺虫液として用いられる屋内衛生害虫駆除剤であって、有効成分としてフルオロベンジルエステル化合物を含有することを特徴とする屋内衛生害虫駆除剤。A heat evaporation method in which a part of the absorbent core is immersed in the insecticide to absorb the insecticide into the absorbent core, and the other part of the absorbent core is heated to evaporate the absorbed insecticide. An indoor sanitary pest control agent used as an insecticidal solution in (1), comprising a fluorobenzyl ester compound as an active ingredient. 前記フルオロベンジルエステル化合物が、2,3,5,6−テトラフルオロベンジル 2,2−ジメチル−3−(2,2−ジクロロビニル)−シクロプロパンカルボキシラートおよび/または2,3,5,6−テトラフルオロ−4−メトキシメチルベンジル 2,2−ジメチル−3−(1−プロペニル)−シクロプロパンカルボキシラートである請求項1記載の屋内衛生害虫駆除剤。The fluorobenzyl ester compound is 2,3,5,6-tetrafluorobenzyl {2,2-dimethyl-3- (2,2-dichlorovinyl) -cyclopropanecarboxylate and / or 2,3,5,6- The indoor sanitary insecticide according to claim 1, which is tetrafluoro-4-methoxymethylbenzyl @ 2,2-dimethyl-3- (1-propenyl) -cyclopropanecarboxylate. ハエ類を駆除対象とした請求項1または2記載の屋内衛生害虫駆除剤。The indoor sanitary pest control agent according to claim 1 or 2, wherein flies are controlled. 有効成分としてフルオロベンジルエステル化合物を含有する殺虫液からなる屋内衛生害虫駆除剤中に吸液芯の一部を浸漬して前記屋内衛生害虫駆除剤を吸液芯内に吸液すると共に、前記吸液芯の他部を加熱して、吸液した屋内衛生害虫駆除剤を蒸散させることを特徴とする屋内衛生害虫駆除方法。A part of the absorbent core is immersed in an indoor sanitary pesticide comprising a pesticidal solution containing a fluorobenzyl ester compound as an active ingredient to absorb the indoor sanitary pesticide into the absorbent core and absorb the water. An indoor sanitary pest control method comprising heating the other part of the liquid core to evaporate the absorbed indoor sanitary pest control agent. 前記フルオロベンジルエステル化合物が、2,3,5,6−テトラフルオロベンジル 2,2−ジメチル−3−(2,2−ジクロロビニル)−シクロプロパンカルボキシラートおよび/または2,3,5,6−テトラフルオロ−4−メトキシメチルベンジル 2,2−ジメチル−3−(1−プロペニル)−シクロプロパンカルボキシラートである請求項4記載の屋内衛生害虫駆除方法。The fluorobenzyl ester compound is 2,3,5,6-tetrafluorobenzyl {2,2-dimethyl-3- (2,2-dichlorovinyl) -cyclopropanecarboxylate and / or 2,3,5,6- The indoor sanitary pest control method according to claim 4, which is tetrafluoro-4-methoxymethylbenzyl @ 2,2-dimethyl-3- (1-propenyl) -cyclopropanecarboxylate. ハエ類を駆除対象とした請求項4または5記載の屋内衛生害虫駆除方法。The indoor sanitary pest control method according to claim 4 or 5, wherein the fly is a control target.
JP2003156248A 2002-08-08 2003-06-02 Indoor hygienic vermin-exterminating agent and method for exterminating indoor hygienic vermin Pending JP2004123702A (en)

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JP2010059197A (en) * 2009-11-20 2010-03-18 Sumitomo Chemical Co Ltd Composition for controlling harmful insect and method of controlling harmful insect
WO2010134164A1 (en) * 2009-05-19 2010-11-25 株式会社大阪製薬 Method for pest insect control, and an ultrasound pest insect control device
JP2018104475A (en) * 2015-03-05 2018-07-05 大日本除蟲菊株式会社 Water-based insecticide composition for heat evapotranspiration and heat evapotranspiration method of water-based insecticide composition for heat evapotranspiration

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JPH0543411A (en) * 1991-08-12 1993-02-23 Sumitomo Chem Co Ltd Thermally dissipating insecticidal process
JP2001247416A (en) * 2000-03-06 2001-09-11 Fumakilla Ltd Fan-type pest-controlling device
JP2001316212A (en) * 1999-06-30 2001-11-13 Dainippon Jochugiku Co Ltd Method for thermal transpiring to kill insect
JP2003192509A (en) * 2001-12-27 2003-07-09 Fumakilla Ltd Transpiratory fly-exterminating agent and method for exterminating fly by using the same

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Publication number Priority date Publication date Assignee Title
JPH0543411A (en) * 1991-08-12 1993-02-23 Sumitomo Chem Co Ltd Thermally dissipating insecticidal process
JP2001316212A (en) * 1999-06-30 2001-11-13 Dainippon Jochugiku Co Ltd Method for thermal transpiring to kill insect
JP2001247416A (en) * 2000-03-06 2001-09-11 Fumakilla Ltd Fan-type pest-controlling device
JP2003192509A (en) * 2001-12-27 2003-07-09 Fumakilla Ltd Transpiratory fly-exterminating agent and method for exterminating fly by using the same

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010134164A1 (en) * 2009-05-19 2010-11-25 株式会社大阪製薬 Method for pest insect control, and an ultrasound pest insect control device
JP2010059197A (en) * 2009-11-20 2010-03-18 Sumitomo Chemical Co Ltd Composition for controlling harmful insect and method of controlling harmful insect
JP2018104475A (en) * 2015-03-05 2018-07-05 大日本除蟲菊株式会社 Water-based insecticide composition for heat evapotranspiration and heat evapotranspiration method of water-based insecticide composition for heat evapotranspiration

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