We've got a crazy nasty gnat infestation here in Chicago right now. A huge gross cloud of them followed us around the park all day. But, they don't bite, and somehow we haven't gotten any in the house yet. However, if they're biting you, they're probably biting the kits. A couple of nice big citronella candles on the front porch and a good old flyswatter will probably solve the problem!
We're supposed to get some rain here tomorrow which should hopefully help--or at least thats what people are saying.