This is a pic of our lawn (about two acres). It was sprayed with "Mosquito Barrier" (no Talstar or any other product was used). It was sprayed on July 2nd about 2:00 p.m. Two days before (June 30), it was "mosquito heaven" when I mowed -- it was really bad -- swarming all over me, and I got many bites. We had dozens of friends from 2:00 p.m. thru 2:00 a.m. each day on July 4 & 5. Number of mosquito bites = only three. There were some gnats and a few flies, but no big deal. Everybody was amazed. I was too. I sprayed "Mosquito Barrier" at twice the concentrated as the label recommended, but the results paid off. Now it's July 7, and I just went outside........no mosquito bites after spending 15 minutes in the yard. I felt I should share this info to anybody thinking about using "Mosquito Barrier". I'm not a sponsor -- just a very satisfied consumer.