Good afternoon, this is Nick from Green Pest Solutions. It was a pleasure speaking with you today! I completed your one time service call for yellow jackets. I removed some of the caulk you used so I could get access to the nest. Once I removed some caulk, I treated the area with a liquid solution. Please give this solution 5-7 days to see the best results. As I explained, you do have a 30 day warranty so if the problem is still ongoing after a week, please give our office a call. Thank you for choosing Green Pest Solutions and I hope you enjoy the rest of your day.