Insecticide of choice for sandfly?: (A) DDT, (B) Malathione, (C) Paris green, (D) None
Answer is A. Ans. is 'a' i.e., DDT Resistance to DDT has not been demonstrated in sandflies A single application of DDT or lindane has been found effective in reducing sandflies. 7 DDT residue may remain effective for a period of 1 to 2 years and lindane only for a period of 3 months.