On another note, when I was a new home owner, we subscribed to Terminex pest control. They came every 3 months, and sprayed both the interior and exterior, left traps, etc.... We we're constantly seeing roaches in the house, so we would call them and they would come out at no charge and spray. It got to the point where they we're coming out every 2-3 weeks. I think they charged $75 every three months. Someone told me about Demon, so I sprayed the perimeter of the house, and the next day I counted over 40 dead roaches on the back porch. I cancelled Terminex that day and never looked back. I don't understand why anyone would use anything else at least around the perimeter of their home. It's inexpensive and extremely effective (and yes, I have tons of lizards around my house, so it's apparently not harming them either)