We had a horrible problem with ants in our kitchen and elsewhere. We bought the ant traps they sell at hardware stores and that seemed to help, but then the ants came back in even greater numbers. We called Dan. He came the next day, spent time with us explaining what he was using and why, and advised us that the ant traps actually wind up attracting them. (I've since learned this from other sources.) He sprayed everywhere we could think of and that worked, but he thought the benefit wouldn't last because the ants were really coming from an elderly neighbor"s yard that we couldn't get into easily. He told us to call him if/when they came back. He was right - the ants came back a week or so later. He came over promptly again, and we arranged to get into the neighbor's yard. He sprayed the neighbor's yard for free (and no charge for our second visit). He showed us both the source and explained it all to our neighbor. She was happy, we were happy, and Dan couldn't be nicer. It's been months, and no sign of ants anywhere. Best $175 I ever spent.