This article in MotherEarthNews had a commenter who stated that this trap also attracted other insects, including bees (which the boric acid is also fatal to).

This article in MotherEarthNews had a commenter who stated that this trap also attracted other insects, including bees (which the boric acid is also fatal to). So, even if it is effective, unfortunately it seems that it's too indiscriminate. http://www.motherearthnews.com/diy/homemade-mosquito-trap-zm0z12jjzhun.aspx http://www.motherearthnews.com/diy/homemade-mosquito-trap-zm...