In Western Illinois the buffalo gnats and black flies ( appear to one of the same) came in with a vengeance this spring. Found a new (at least to me) product called Buggins that comes in a spray bottle and has pure vanilla, Rose and Mint as the ingredients. Not great on mosquitoes but after testing it out fishing, it works great. Everyone around here iswaiting list to get it. Sells for around 7.00 and may be available over the internet, if you want to search. The bugs have been so bad that the local Gander Mountain sold out of face nets and has another 190 on order.