We had a problem a few years ago when carpenter ants set up housekeeping at our house. The gentleman from Ehrlich did a thorough inspection of our house, recommended a solution and sent a very professional technician to our home to get rid of them. We use them to this day several times a year to make sure the ants do not come back. Our technician, Frank, is very pleasant and thorough. Several of our neighbors have since had colonies of carpenter ants invade their homes, as we all live near a wooded area, but thanks to Ehrlich, we no longer have any ant problems. No spiders either which is a big plus.