I have had a problem with carpenter bees for many years. I have had many companies come to try to rectify my problem, no success. I called Cooper last year, they came and sprayed, it was so nice not having the pesky insects bothering me or my house. This year I called earlier in the season before the warm weather hit, now having 80+ degree weather I haven't seen any bees. Thank you Cooper, I WILL recommend you to my neighbors.