ACARICIDES (Greek akari — a tick and lat. with caedo — I kill) — the means applied to extermination of ticks.
Depending on a way of penetration into an organism of mites distinguish contact And. — getting through outside covers, intestinal — getting to an organism through went. - kish. a path, and fumigantny — getting through respiratory tracts. Majority And. are at the same time contact, intestinal and fumigantny.
In quality And. widely apply organophosphorous derivatives, active to herbivorous mites — a metaphos, metilnitrofos, trichlorometafos, phosphamide, methylmercaptophos, a thiophos, etc.; some chlorinated hydrocarbons — DDT, hexachlorane, chlordan, heptachlor, aldrin, etc.; aromatic alcohols, ethers of acids, sulfides, sulphones, azobenzene, nitrophenols and some organic compounds of fluorine. Apply benzyl benzoate, and also Vilkinson's ointment and sodium thiosulphate to destruction of an itch mite.
Action of organophosphorous derivatives is based on inhibition cholinesterases (see). Under the influence of chlorinated hydrocarbons arthropods have an excitement, a tremor of extremities, a lack of coordination of movements, then there comes paralysis.
At use And. it is necessary to observe the big care excluding their hit in a human body and farm animals. At hit And. in went. - kish. the path, respiratory tracts, and also at their absorption through an integument can arise poisoning (see. Organophosphorous connections , Chlorinated hydrocarbons ).
Bibliography: Grebsnkina M. A. Means for fight against arthropods and rodents, the Management on pharmakol., under the editorship of N. V. Lazarev, t. 2, page 222, L., 1961; N. N. Himiya's Millers of pesticides, M., 1968.
V. A. Babichev.