Mother Earth News suggests using a trap made from a 2-liter soda bottle to kill mosquitoes. It's typically easier to deter mosquitoes and other pests rather than kill them.
A 2-liter trap is made by cutting the bottle one-third of the way down from the top, then inverting the top section of the bottle so that the mouth of the bottle is inside the bottom portion of the bottle. Fill the bottle about one-fourth of the way with fruit juice to attract pests. According to the Washington State Department of Health, adding Bacillus thuringiensis israelensis, or BTI, to the liquid is an effective method of killing mosquito larvae. BTI can be added to the two liter trap and any sitting water in the outdoors for maximum effectiveness. Citronella candles and sprays are a safe and effective deterrent for mosquitoes.