Good afternoon. Today I completed your one time pest control service call. Today I used a liquid residual product on the backyard pergola on the patio for carpenter bee activity. Please allow this liquid residual product 7 to 10 days for the liquid product to start working. In that time frame in there after you should start to see a decrease in carpenter bee activity. ï¿¼ï¿¼ This liquid product will leave an invisible band that the pests do not know is there, they cross over, pick up the chemical on their sticky appendages(legs) and possibly transfer the chemical back to each other, eventually it will catch up to the pests and kill them. If you should have any questions or concerns please call us. Thank you for choosing Green Pest Solutions.P.S. Signature and credit card are on file.