To control Malaria and dengue caused due to mosquito bites, a systematic anti–larval measure is required to be implemented with the selective residual chemicals. They work by killing mosquito larvae before they can grow into adults. For this, the chemical is sprayed intermittently in all the logged areas, stagnated pints, slow running stream, drainage line, sewage line and drains, paddy field, septic tanks, heavily vegetated areas, etc. With this we can achieve effective mosquito control at the breeding level itself, where we can have maximum coverage with minimum chemical consumption.