Larvicides - funds toxic acting on insect larvae. For struggle against insects (see Disinsection) using larvicides and insecticide; the last in varying degrees, have larvicide properties. Almost suitable only larvicides (in the form of fine powders, solutions, emulsions, located on the surface), that are insoluble or poorly soluble in water. When using larvicides in the fight against larvae of flies advantage enjoyed by those larvicides, you can make to the substrate in dissolved form. Can be used as insecticide. To larvicides are also oily substance covering reservoirs film that violates the breath of insect larvae. The basic means of struggle against mosquitoes (including malaria), gnats, scratches and some other insects are considered larvicides, acting upon entering the intestine their larvae (intestinal larvicides); these include chlorinated hydrocarbons (DDT, HCH, Aldrin, dieldrin and others). However, in connection with cumulative properties using DDT currently strictly regulated. Of organophosphorus compounds best larvicide the properties of methyl-nitrophos and baitex. All drugs ingestion (armel, Paris greenery and others) slightly soluble in water and are used as larvicides in the fight against mosquitoes.
Some larvicides quickly decompose (organophosphorus compounds), others retain their larvicide properties within 1-5 years. In the fight against mosquitoes using larvicides (dusty DDT or HCH) - 5-10 kg per 1 ha of open areas and 15 kg per 1 ha of areas covered with forest. In the fight against flies process designated for larval development; liquid waste with humidity 70-80% cover with a thin layer of larvicide (triclofos, chlorophos, karbofos and others); created the film leads to rise to the surface sewage larvae perish.
People working with larvicides are provided with overalls and means of protection of the respiratory system, after work, they must take a shower; before a meal to wash their hands and remove any clothing.