MXPA98001247A - Composition with insectic effect - Google Patents

Abstract

The present invention relates to a new composition, alone based on transfluthrin, with insecticidal effect, characterized in that they have an excellent effect against flying insects, a good knockdown effect, a good creeping effect and a residual effect for a while. prolonged against crawling insects and arachnids, by microencapsulation of the active product

Description

COMPOSITION WITH INSECTICIDE EFFECT DESCRIPTION OF THE INVENTION The present invention relates to a new composition based solely on transfluthrin with insecticidal effect, characterized in that it has an excellent effect against flying insects, a good knockdown effect, high creeping effect as well as a prolonged residual effect against crawling and arachnid insects, by microencapsulation of the active product. Insecticide combinations are usually used to combat insects and arachnids in internal enclosures successfully. In this case, different classes of insecticidal products are usually combined (Behrenz and K. Naumann, Pflanzenschutznachrichten Bayer, 35, 309 (1982)). In order to achieve against the insects a "creeping effect" and an immediate effect ("knock-down effect") as well as a prolonged effect ("residual effect"), blends of acid esters have been used up to the present. Phosphoric, carbamates and stable pyrethroids for a long time (C. Fest, K.-J. Schmidt, The Chemistry of Organophosphorus Pesticides, Springer-Verlag, Berlin (1982), W. Behrenz, E.Bóc er, Pflanzenschutznachrichten Bayer, 18 , 53 (1965), I. Ha Mann, R. Fuchs, ibid., 34, 123 (1981) and in the literature cited there). The task of the present invention was to deviate from the insecticide combinations and in limi- REF: 26817 to an active product, and the aforementioned conditions must be met. In the present invention, a composition is now described which is characterized in that it contains a single active product and has an excellent effect against flying insects, a good knock-down effect with a creeping effect and a residual effect against crawling insects as well as against arachnids . The transfluthrin of the formula is an excellent active product for the fight against pests of hygiene, materials and products stored in the most diverse formulations suitable for use in aerosol, in evaporator and fumigated. It can be active against normally sensitive and resistant types as well as against all or some of the stages of development. The aforementioned pests belong: From the order of the isopods, for example, Oniscus Asellus, Armadillidium vulgare and Porcellio scaber. From the order of the isopods, for example, Oniscus asellus, Armadillidium vulgare and Porcellio scaber. From the order of the diplópodos, for example, Blaniu-lus guttulatus. From the order of the chilopoda, for example, Geophi-lus carpophagus and Scutigera spec .. From the order of the syphilis, for example, Scutige-rella immaculata. From the order of the tisane, for example, Lepisma saccharina. From the order of springtails, for example, Onychi-urus armatus. From the order of the Orthoptera, for example, Blatta orientalis, Periplaneta americana, Leucophaea maderae, Blatella germanica. Acheta domesticus, Gryllotalpa spp., Locusta migratoria 'migratorioides, Melanoplus differentialis and Schistocerca gregaria. From the order of dermápteros, for example, Forfícula auricularia. From the order of the Isoptera, for example, Reticu-litermes spp .. From the order of the anopplura, for example, Phyllo-xera vastatrix, Pemphigus spp., Pediculus humanus corporis, Haematopinus spp. and Linognathus spp ..

From the order of the malophagous, for example, Tricho-dectes spp. and Damalinea spp. From the order of the Thysanoptera, for example, Her-cinothrips femoralis and Thrips tabaci. From the order of the heteroptera, for example, Eury-gas er spp., Dysdercus intermedius, Piesma quadrata, Cimex Lectularius, Rhodnius prolixus and Triatoma spp. From the order of the Homoptera, for example, Aleu-rodes brassicae, Bemisia tabaci, Trialeurodes vaporariorum, Aphis gossypii, Brevicsryne brassicae, Cryptomyzus ribis, Aphis fabae, Doralis pomi, Eriosoma lanigerum, Hyalopterus arundinis, Macrosiphum avenae, Myzus spp., Phorodon humuli, Rhopalosiphum padi, Empoasca spp., Euscelis bilobatus, Ne-photettix cincticeps, Lecanium corni, Saissetia oleae, Lao-dephax striatellus, Nilaparvata lugens, Aonidiella auran-tii, Aspidiotus hederae, Pseudococcus spp. and Psylla spp. From the order of the Lepidoptera, for example, Pec-tinophora gossypiella, Bupalus piniarius, Cheimatobia bru-mata, Lithocolletis blancardella, Hyponomeuta padella, Plu-tella maculipennis, Malacosoma neustria, Euproctis chrysor-rhoea, Ly antria spp. ., Bucculatrix thurberiella, Phylloc-nistis citrella, Agrotis spp., Euxoa spp., Feltia spp., Earias insulana, Heliothis spp., Spodoptera exigua, Ma es-tra brassicae, Panolis flammea, Prodenia litura, Spodoptera spp., Trichoplusia ni , Carpocapsa pomonella, Pieris spp., Chilospp., Pyrausta nubilalis, Ephestia kuehniella, Galleria mellonella, Tineola bisselliella, Tinea pellionella, Hofmannophila pseudospretella, Cacoecia podana, Capua re-Ticulana, Choristoneura fumiferana, Clysia ambiguella, Magnanimous Ho-mona and Tortrix viridana. From the order of coleoptera, for example, Ano-bium punctatum, Rhizopertha dominica, Acanthoscelides ob-tectus, Hylotrupes bajulus, Agelastica alni, Leptinotarsa decemlineata, Phaedon cochleariae, Diabrotica spp., Psy-lliodes Chrysocephala, Epilachna varivestis, Atomaria spp. , Oryzaephilus surinamensis, Anthonomus spp., Sitophilus spp., Otiorrhynchus sulcatus, Cosmopolites sordidus, Ceu-thorrhynchus assimilis, Hypera postica, Dermestes spp., Trogoderma spp., Anthrenus spp., Attagenus spp., Lyctus spp., Meligethes aeneus, Ptinus spp., Niptus hololeucus, Gibbium psylloides, Tribolium spp., Tenebrio molitor, Agriotes spp., Coñoderus spp., Melolontha melolontha, Amphimallon solstitialis and Costelytra zealandica. From the order of Hymenoptera, for example, Di-prion spp., Hoplocampa spp., Lasius spp., Monomorium pha-raonis and Vespa spp. From the order of Diptera, for example, Aedes spp., Anopheles spp., Culex spp., Drosophila melanogaster, Musca spp., Fannia spp., Callliphora erythrocephala, Lu-cilia spp., Chryso ya spp., Cuterebra spp., Gastrophilus spp., Hyppobosca spp., Stomoxys spp., Oestrus spp., Hypo-der spp., Tabanus spp., Tannia spp., Bibio hortulanus, Oscinella frit, Phorbiaspp., Pegomyia hyoscyami, Ceratitis capitata, Dacus oleae and Typula paludosa . From the order of siphonoptera, for example, Xeno-psylla cheopis, Ctenocephalides felis, Ceratophyllus spp. From the order of arachnids, for example, Scorpio maurus, Latrodectus mactans. From the order of mites, for example, Acarus siró, Argas spp., Ornithodoros spp., Dermanyssus gallinae, Eriophyes ribis, Phyllocoptruta oleivora, Boophilus spp., Rhipicephalus spp., Amblyomma spp., Hyalomma spp., Ixodes spp., Psoroptes spp., Chorioptes spp., Sarcoptes spp., Tar-sonemus spp., Bryobia praetiosa, Panonychus spp., Tetrany-chus spp. Preferably the composition according to the invention will be applied against 'flying insects such as mosquitoes, flies, moths, etc. as well as against crawling bugs, hiding in hiding places such as cockroaches or fleas at all stages of development. These are expelled from their hiding places (flood effect), so that they come into physical contact with the newly obtained layers of active product and are destroyed. If the cockroaches or fleas are sprayed directly, they fall immediately on their backs (knocked down) and no longer they can recover again (mortality). In order to achieve such an effect, trans-flutrin can be used in the most diverse formulations, such as, for example, in spray cans, in the form of oleaginous spray agents, in the form of water-based pump sprays as well as in the form of Ultraviolet ULV cold and hot fogging. Also suitable are formulations such as for example emulsion concentrates (EC), water-based emulsion concentrates (EW) or wettable powders (P). In addition to the effects described, the trans-luthrin can also be used as a preparation with a shorter duration of effect for the control of crawling insects, preferably cockroaches or fleas, due to their physical and biological properties. A shorter duration of effect, depending on the quantity applied, will be understood as a duration of the effect of a few days (<1 week). The preparation also acts against all larval stages and adult animals of cockroaches and fleas, when used as a residual active product. By means of the microencapsulation of transfluthrin, for example in polyurea capsules, however, a metered release of the active compound can be achieved from the active compound with a shorter duration of action by means of the microcapsule control system.

With the aid of this system, a preparation with a prolonged effect over time can be obtained from an active product of short duration. The part that is not microencapsulated can be formulated as EC, EW or as an undiluted liquid (AL). By using transfluthrin in a free part, for example formulated as EW and from a microencapsulated part CS (CS = microencapsulated), for example a water-based aerosol can be prepared with only one active product, which has an excellent effect against flying insects, as well as a good knockdown effect, a good creeping effect and a good residual effect against crawling insects. The ratio between the encapsulated part of active product CS and the free part EW can be varied within various proportions according to the desired effect. In general, CS: EW proportions of 100 parts of CS are used: 0.1 parts of EW to 0.1 parts of CS: 100 parts of EW. Preferably, the proportions of 10 parts of CS are used: 0.1 part of EW to 0.1 part of CS: 10 parts of EW. A proportion of one part of CS is especially preferred: 10 parts of EW to 10 parts of CS: 1 part of EW. The content in active product of the forms of application prepared from the formulations used in the market, it can vary within wide limits. The active compound concentration of the application forms can be from 0.0000001 to 95% by weight of active compound, preferably from 0.0001 to 1% by weight. Transcatrin microcapsule. The transfluthrin microcapsules are prepared with the interfacial polymerization process. The wall of the microcapsules is constituted for example by a polyurea material. The wall of the microcapsules is formed in the boundary surface comprised between the organic phase and the aqueous phase from a polyisocyanate with a polyfunctional amine. The polyisocyanate can be aromatic or aliphatic. This must be, at least, bifunctional, however it may also contain several isocyanate groups. Polyisocyanates for microencapsulation are, for example, toluene diisocyanate, diphenylmethane diisocyanate, phenylenediisocyanate, hexamethylene diisocyanate and 1,6-hexadisocyanate. The polyfunctional amines must also be at least bifunctional, for example ethylenediamine, hexamethylendiamine, phenylenediamine, diethylenetriane and tetraethylene-pentamine. The organic phase is constituted by a solution of transfluthrin and a polyisocyanate. The aqueous phase consists of water and a protective colloid, for example PVA (polyvinyl alcohol), PVP (polyvinylpyrroli- donate) etc. An oil-in-water (O / W) solution is prepared from the aqueous and organic phases. (The protective colloid prevents the polymer from reacting with water during the emulsification process). The polyfunctional amine is then added and polymerized, if appropriate, under increased temperature with the polyisocyanate to form polyurea microcapsules. An aqueous suspension of transflutrin microcapsules is obtained. In principle, however, other polymers can also be used for the microencap. the transfluthrin. The material of the capsule wall, the size of the microcapsules as well as the thickness of the polyurea wall - and thus the release of transfluthrin from the microcapsules - can be adjusted accordingly with the help of manufacturing parameters. Example of recipe for 1 kg of suspension to 10% of micro-capsules of transfl'utrina. PVA 1% in water 530 g Transfluthrin 100 g Solvesso 200® 285 g Diphenylmethane diisocyanate 15 g Diethylenetriamine 10% in water 45 g Kelzan 2% + benzylhemiformal 4% in water 25 g 1000 g. Transfluthrin dissolves in Solvesso 200 and this solution is mixed with diphenylmethane diisocyanate. The organic phase is obtained. From the PVA solution and the organic phase an O / W emulsion is prepared at a temperature of 25 ° C. (This is used for example the Ultra Turrax T50 of the Firm: Janke &; Kunkel, IKA-Labortec nik in Staufen.). The size of the droplets in emulsion, which corresponds to the size of the microcapsules, can be adjusted by means of the emulsification speed and the duration of the emulsification, for example it is emulsified for 2 minutes at 7,000. revolutions per minute. The solution of diethylenetriamine is then added under agitation. Heat slowly (within 1-2 hours) to 60 ° C. These 60 ° C are maintained for about 5 hours under agitation. The polymerization of diphenylmethane diisocyanate and diethylenetriamine to give polyurea microcapsules is concluded below. The aqueous gel of Kelzan S with benzylhemiformal is added under agitation. (The Kelzan S polysaccharide, a gum called xanthan, is a polymer thickener of the Kelco Company, and benzylhemiformal, a formaldehyde dissociator, is a preservative agent of the Bayer AG). After cooling to room temperature, the test is concluded, and the suspension of transflutrin crocapsules. However, other polymers for the microencapsulation of transfluthrin can also be envisaged. If they are reacted, for example in place of the polyfunctional amines, the corresponding polyfunctional alcohols with the polyfunctional isocyanates mentioned above, microcapsules with polyurethane structure will be obtained instead. If the corresponding polyfunctional acyl chlorides are reacted, for example in place of the polyfunctional isocyanates, with the aforesaid polyfunctional amines, microcapsules with a polyamide structure will be obtained instead. Test with spray cans in relation to the effect of flooding with cockroaches. The test was carried out in plastic capsules (boxes of 'Pikier, Type 23, W. and H. Fernholz GmbH &Co. KG, Meinerzhagen) with dimensions of 40 cm x 60 cm x 6 cm. The filter paper placed on the bottom was fixed with "tesa" tape 4104. The side walls, treated with talc, prevented the cockroaches from escaping. In the center of the capsules the burrow was arranged, in the previous third a small inverted heavy glass filled with water, as a drinker, as well as a piece of sponge cake as food.

The bottom and cover plate of the burrow are made of aluminum coated with a white DD varnish, the lateral ribs and the slide are Teflon. The construction is maintained by means of countersunk screws and wing nuts, the desired depth of the burrow being adjusted by means of the slide. The constitution and dimensions of the burrow can be seen [figure 1]. By replacing the slide and the lateral ribs, the height of the burrow can be modified. In each container, 10 cockroaches of a certain type as well as a determined stage or sex were arranged 24 hours before the start of the test. At the end of this time all the animals were in the burrow, as a rule. This was taken to the drain and placed in a container of synthetic material with dimensions of 65 cm x 46.5 cm x 30 cm on two glass cylinders (total height 36 cm, diameter 12 cm). 2 g of the contents of the canister were sprayed into the burrow opening from a distance of 30 cm and at a height of 36 cm. Once the spraying process was completed, the burrow was transferred from the synthetic material capsule to a glass ring partially treated with talcum (height 5 cm, diameter 10 cm). The number of cockroaches put to flight was determined at intervals 1 minute, up to 5 minutes after treatment, and at intervals of 5 minutes to 30 minutes after treatment, as well as after 60 minutes and 24 hours. After 60 minutes a folded filter paper disk with a diameter of 9.5 cm was supplied as protection for cockroaches put to flight in the Pikier boxes. In each test, a control treatment was carried out with a bottle free of active product. Only in particular cases the cockroaches put to flight entered the burrow again; as a rule they fell immediately from the burrow. Once the test was completed, the burrow was unscrewed, subjected to a previous rinse with acetone, cleaned at 95 ° C in the washing machine and dried at 150 ° C in the drying cabinet.

T a b l a 1 Flashing effect of a transfluthrin spray can against cockroaches of the Germanic Blatella type L 5 Burrow height: 0.5 cm Average of two tests Temperature: 21 ° C Burrow depth: 5.0 cm Relative humidity: 55% Amount sprayed: 2.0 - 2.2 g of contents of the pot Ul Test with spray cans on the effect after direct spray of crawling insects. The tests were carried out in a drainage chamber, which can be regulated in terms of suction in such a way that no negative effect of the spray jet takes place. A cockroach is disposed respectively in a wire mesh box with an internal diameter of 70 mm, a height of 10 mm and a mesh width of 1.5 mm. The test vessels, prepared in this way, are attached to a spray installation at an angle of 45 °. The back and bottom surface of the wire mesh test container is covered with absorbent filter paper, which is changed after each test. The spray can is held on the spray installation at a distance of 60 cm, calculated in the center of the wire mesh to the nozzle of the spray head of the aerosol to be tested, so that the spray jet penetrates perpendicularly. -only on the wire mesh. The time to be sprayed, in relation to the can to be tested, is previously determined to apply a contents of the can of 2.4 to 2.8 g. Before and after each test the boat is weighed to determine exactly the amount released. At the same time, a stopwatch is operated with the spray valve in order to accurately determine the KD effect (KD = knocked down effect) on the animals. The animals are transferred immediately after spraying to a clean container, are endowed with a swab and are evaluated as to the knock down after the time as well as in% mortality after certain times. T a b l a 2 Effect of a spray can with unencapsulated transfluthrin after direct spray of cockroaches of the Blattella germanic mm type.

Amount sprayed: 2.4 - 28 g Temperature: 22 ° C content of the boat / cockroach from Relative humidity: a distance of 60 cm 47%. (Average of 10 trials) Test method for experimenting spray cans with respect to their residual effect against trailing insects. Pulverizado of supports. The treatment is carried out in a drainage chamber, in which the aspiration can be regulated in such a way that no negative effect takes place on the spray jet of the can. The cup is coated on the base and on the walls up to a height of 65 cm with filter paper. The most important materials can be treated, especially glazed and unglazed tiles, PVC sheets, varnished plywood, etc. The supports treated in this way (dimensions 15 x 15 cm = 225 cm2) were placed on a tripod ring (external diameter 10 cm) which is fixed at a height of 5 cm on a tripod, and supported on the tripod linkage. in such a way that an angle of 55 ° is formed. Since each spray can, of composition and with different technical equipment, can deviate in its behavior to spray (pressure) spray cone, droplet size, the tester has to test with each spray can on supports cardboard (15 x 15 cm) before actually treating the supports, to determine the distance and the speed with which the spray must be made.

A homogeneous pulverization of the supports will be achieved with the desired amount of application when sprayed, according to the spray cone and the pressure of the spray can, at a distance of 25 to 40 cm. In this case it has been revealed as convenient to drive the boat with the hand in the form of a semicircle. In this case, the spray jet will be guided over the support starting from the upper left through the center to the right to the lower left (see figure 2). The amount that is sprayed beyond the edges of the support, the loss of spray, was determined in corresponding tests with cardboard frames and was approximately 10%. Before and after each spraying process, the spray can is weighed to determine the amount of contents released from the can. In order to apply a quantity of contents of the pot of 50 g / m2, 1.24 g of contents of the pot / 225 cm2 have to be discharged. This quantity already contains the determined spray loss of 10%. The supports on which the contents of the canister within the tolerance of 1.20 to 1.30 g are not applied must be discarded. Immediately after spraying the support is removed from its inclined position and placed horizontally, to prevent spillage of the spray applied coating, especially in the case of non-absorbent supports and extremely wet spray cans. After the spray applied coating is dried, the supports are transferred to the test room. Animal material and test. The treated supports are covered respectively with 5 cockroaches, which have been kept in glass rings treated with talc (diameter 9.5 cm, height 5.5 cm). Evaluation: The treated supports are covered one day after the treatment, then after 2 to 4 days, daily, respectively, with the test animals. The evaluation is carried out at 100% demolition or mortality after 15, 30 and 60 minutes, as well as after 2, 3 and 4 hours.

T a b l a 3 Residual effect of a transflutrin spray bottle with unencapsulated transfluthrin applied on voided tiles (LK) and unglazed tiles (UK) against cockroaches of the Blatella germanica mm type. Temperature: 24-25 ° C Relative humidity: 69-76%.

Test of spray cans on the aerosol effect. The tests are carried out in enclosures with a capacity of 20 m3 (L = 2.84 ra, A = 2.33 m, H = 3.03 m), whose internal walls and lids are made of refined steel (DIN 4571) with, respectively, 5 windows per enclosure. The floor is lined with unvarnished tiles. In the test rooms, from the ceiling, at a height of 1.80 m, and at 0.45 m, from each wall, 3 wire cages (L = 8.5 cm, diameter = 8.0 cm, width of mesh = 1.0 mm) with 20 test animals respectively. It is pulverized in the enclosure, in a controlled way by means of a computer, through an orifice (diameter = 13 cm) at a height of 1.90 m, in front of the door, from the outside, the desired amount of content of the spray can (amount of application) and distributed in the enclosure homogeneously by means of a fan that is operated for 1 minute (mark "Progress", type 958 5790-04 Wll). The evaluation is carried out through a glass window. It is determined after how long they are lying on their backs 50% and 95% of animals (KT 50 and KT 95, KT = time of demolition). The test animals remain for 60 minutes in the enclosures. The% of the animals that have fallen on their backs (KD) are then determined. All animals are removed from The cages are transferred to transparent synthetic cups free of insecticide. The cups are covered with perforated lids and equipped with cellulose swabs soaked in a 10% sugar solution. Once the test animals have been kept for 24 hours in an insecticide-free atmosphere, mortality is determined. The type of animals tested, the composition of the active product of the spray cans and the biological results as well as the number of tests, the application quantities (g / 20 m3) and the spray time (seconds), the temperature of the Enclosure and the relative humidity of the enclosure can be seen in the tables.

T abla 4 Aerosol effect of CS + EW transtflutrin as a combination in spray cans against various test animals Test n ° 8 (Average of 3-5 tests) Temperature: 23.5-24.5 ° C Relative humidity: 46, 1-65.5% ISJ For the method see above.

T abla 5 Effluent effect of CS + EW transfluthrin as a combination in spray cans against cockroaches of the Blattella Germanic type L5 Burrow height: 0.5 cm Average of 5 tests Temperature: 21 ° C Burrow depth: 5.0 cm Relative humidity: 40-50%. l For the method see above.

T abla 6 Effect of CS and EW transfluthrin as a combination on spray cans after direct spray of cockroaches of the Blattella Germanic type L 5 Amount sprayed: 2.4-2.8 g of contents of the pot / cockroach Temperature: 21 ° C from a distance of 60 cm Relative humidity: 50% (Average of 10 trials) ts) e For the method see above, T abla 7 Residual effect of CS + EW transfluthrin as a combination in spray cans applied on varnished wood (LH), glazed tiles (LK) and unglazed baldoßineß (UK) against Blattella germanica L5 Application quantity: 50 g content pot / m Temperature: 24 ° C Relative humidity: 70-75%, NJ It is noted that, in relation to this date, the best method known by the applicant to carry out the aforementioned invention, is that which is clear from the present description of the invention. Having described the invention as above, the content of the following is claimed as property:

Claims (12)

1. CLAIMS 1.- Insecticide and acaricide composition, characterized in that it contains microencapsulated transfluthrin.
2. 2. Insecticidal and acaricidal compositions according to claim 1, characterized in that a free, non-microencapsulated part is also contained in addition to a microencapsulated part of transfluthrin.
3. 3. Insecticidal and acaricidal compositions according to claims 1 and 2, characterized in that the microcapsules are based on polyurea material.
4. 4. Insecticidal and acaricidal compositions according to claims 1 to 3, characterized in that the microcapsules are constituted by polyurea material, the polyurea formulation being constituted from a polyisocyanate and a polyfunctional amine.
5. 5. Insecticidal and acaricidal compositions according to claims 1 to 4, characterized in that toluene diisocyanate, diphenylmethane diisocyanate, phenylene diisocyanate, hexamethylene diisocyanate or hexanediisocyanate are used as the polyisocyanate and ethylene diamine, hexa methylene diamine, phenylenediamine, diethylenetriamine or tetraethylene pentane amine are used as the polyfunctional amine. .
6. 6. Insecticidal and acaricidal compositions according to claims 1 to 5, characterized in that the non-microencapsulated part is formulated as a concentrate in EC emulsion, as an emulsion concentrate based on EW water or as an undiluted liquid AL.
7. 7. Insecticidal and acaricidal compositions according to claims 1 to 6, characterized in that the proportion between the microencapsulated and non-encapsulated parts is between 100: 0.1 and 0.1: 100.
8. 8. Insecticidal and acaricidal compositions according to claims 1 to 7, characterized in that the ratio between the microencapsulated and non-encapsulated parts is between 10: 0.1 and 0.1: 10.
9. 9. Compositions according to claims 1 to 8, characterized in that they are spray formulations.
10. 10. Compositions according to claims 1 to 8, characterized in that they are formulations such as hot and cold bubbled, ultra low volume (ULV), emulsion concentrates (EC), water-based emulsion concentrates (EW), microencapsulated suspensions (CS) or undiluted liquids (AL).
11. 11. Use of the compositions according to claims 1 to 10, for the fight against insects or mites, which occur in the home or as pests of hygiene and stored products.
12. 12.- Procedure to combat insects or acari, which occur in the home or as pests of the or stored products, characterized in that compositions according to claims 1 to 10 are allowed to act on the insects or mites and / or on their environment. SUMMARY The present invention relates to a new composition, alone based on transfluthrin, with insecticidal effect, characterized in that they have an excellent effect against flying insects, a good knock-down effect, a good creeping effect as well as a residual effect during a prolonged time against crawling insects and arachnids, by microencapsulation of the active product.