ABSTRACT
A laboratory evaluation of cotton and nylon bed-nets treated with permethrin and DDT was carried out by releasing blood-fed An. maculatus for 30 minutes in the treated net. Results show almost 100% mortality up to one year after treatment. A ten minute exposure on the outside of the net also gave similar results. Even after washing the nets continued to give very good results. A method of treating the nets is described.
Subject(s)
Animals , Anopheles , Beds , Costs and Cost Analysis , DDT , Evaluation Studies as Topic , Mosquito Control/economics , Permethrin , PyrethrinsABSTRACT
Bacillus thuringiensis israeliensis (BTI) against culicine mosquitoes was tried out in cement sullage drains in Kelang municipal area at a dosage of 0.15 ppm. and 0.6 ppm. The results of the trial showed that at 0.15 ppm. the BTI was not effective, but at 0.6 ppm. it was effective giving about 95% kill. There was no residual effect and treatment had to be repeated weekly.