Abstract: Dengue fever is making headlines all over the world. It is a mosquito-borne disease. The huge leap in dengue cases is causing many scientist and medical experts to worry. There is no cure for dengue fever. In fact, one of the biggest challenges the medical community faces is how to control dengue and how to stop the disease from spreading. Right now, one of the most effective way is the vector control. The current study is the laboratory and field evaluation of Bacillus thuringiensis var israelensis Vectobac® WDG (Water dispersible granules) 3000 ITU / mg was carried out against Aedes albopictus (early 4th instar) larvae from Lahore Pakistan. The primary objective was to control Aedes mosquitoes (Mainly vector of Dengue fever) by determing the minimum effective dosage of Bti WDG for larval mortality and pupae reduction of Aedes albopictus in laboratory as well as in the field assay.