Prevent mosquito breeding--Don't let water accumulate anywhere. If you have stored water for a long time, empty the container. Also empty old tyres, flower pots and buckets if they contain water. Mosquitoes breed in water and hence the best way to prevent mosquitoes from breeding is to avoid water accumulation. However, if you must store water, make sure the containers are completely covered. Also, cover dustbins and trash cans when not in use.