Am going to get some of those Hot Shot Pest Strips when I can. Just for outdoor use? I spray for flies inside with Malathion, zero tolerance for flies. Pest strip probably safer than Malathion. Gnats know and love me when I go outside for a few seconds. When the dogs were coming in from outside recently, one normal size fly was on the dog's fur, and intended to come in riding on the dog!! Not a normal fly!!! No fear of people.It was probably laying eggs in the fur, wish I'd bathed her right away. I wasn't using cattle topicals yet.