Field Trial Tests On The Efficacy And Residual Effects Of Bistar® 10wp On Mosquitoes And Other Household Arthropod Pests

Abstract

A field test on the efficacy and residual effect of Bistar® 10WP on mosquitoes and other household arthropod pests was conducted at Agu-Owa and Ugbo-Oghe communities in Enugu East Local Government Area of Enugu State, Nigeria. Eighteen four-bedroom apartments noncontiguous with each other and infested with bedbugs and other homestead arthropod pests were selected for the studies from the two communities. In each area, Bistar® 10WP was sprayed in the inside wall surfaces of 3 four-bedroom apartments, lamba cyhalothrin (ICON), was sprayed in another set of 3 four-bedroom apartments and the last 3 houses were used as controls. Pre-and post insecticide application vector monitoring were carried out in the two areas to determine the homestead vector abundance. Insecticide bioassay was carried out to determine the residuality of Bistar® 10WP. Pre-insecticide application vector studies revealed 532 homestead arthropod pests with cockroaches 293(55.08%) and bedbugs 201(37.78%) constituting the bulk of the collections. Post-spray vector evaluation revealed no homestead arthropod in the sprayed areas except in the controls. Bioassay studies showed that Bistar® 10WP compared well with ICON in its efficacy and residuality. Bistar® 10WP was highly accepted by the people as it was odourless and non-irritating to the body and sense organs. More studies were recommended on its efficacy in controlling aquatic and field pests like Glossina species.