Warm weather brings them out again in search of water on which to lay their eggs. Culiseta mosquitoes are moderately aggressive biters, attacking in the evening hours or in the shade during the day. Psorophora , Coquillettidia and Mansonia mosquitoes are becoming more pestiferous as their natural habitats are invaded by an ever expanding human population. Anopheles mosquitoes are the only mosquito which transmits malaria to man. Chemical control of mosquitoes around the home may be accomplished with the use of repellents or space sprays.
Repellents are substances that make a mosquito avoid biting people.
Several repellents are effective against mosquitoes. Check the label before buying. Oil of citronella is another type of mosquito repellent for space repelling. Oil of citronella is the active ingredient in many of the candles, torches, or coils which may be burned to produce a smoke which repels mosquitoes. These are useful outdoors only under windless conditions.