Hi, thank you for taking the time to share your experience. When performing a wasp extermination our objective is to destroy the nest they have made inside your structure, in order to get to the root of the problem. It is always possible to see some activity inside and if we are on site during that time we can knock it down for you with raid. In regards to the nest still being active, that can happen as well, as the nest can be deep inside the structure (difficult for treatment to reach), and in some cases you may need a second application. If this was the case, you can always give us a call and schedule a follow up visit! Should you have any further concerns, please do not hesitate to contact us and we will be more than happy to help :)
Best Wishes,
Pestend Team
Reply created 22 Jan 2020