Residual effect of four insecticides applied for indoor control of phlebotomies papatasi [scopoli]

The residual effect of four known insecticides prepared in olive oil and sprayed on cement plastered walls was estimated against the Egyptian strain of Phlebotomus papatasi [Scopoli]. The results showed that propoxur reduced the number of the tested sand flies to 16.5%, 24.1%, 46.4%, 53.4% and 76.7%, 75 days post treatment after an exposure time for 5, 10, 15, 20 and 30 minutes. Permethrin caused zero, 17.5%, 25.0%, 41.4%, and 51.9%, malathion caused 4.3%, 10%, 26.7%, 35.9%, and 49.1%; and BHC caused zero, 10%, 30%, 36.3% and 48.1% for the same exposure time, respectively. This indicated that propoxur had the highest residual effect and BHC had the lowest one. The results were discussed in relation to leishmaniasis control