There are a variety of factors that may be taking place if you are seeing insects after a treatment is applied. First, we always ask to be patient and allow the insects time to land and cross over the applied areas. It can take 30 days after an application to see a difference in insect activity. Another factor that could be taking place is if there is a cedar shake roof, cedar siding, or a wooden deck in need of a staining or fresh coat of paint. Any places that have exposed dried-out wood will attract wasps to that area. Wasps use the dried-up wood to create their nesting material by chewing on it. Carpenter ants will also continue to be attracted to any decks if there are boards that are water-damaged. Some other factors would be whether the home is located in a high-insect pressure area. This would include being in a wooded environment or near a body of water like a lake, marsh, pond, etc. Homes like this may require multiple treatments to consistently apply a preventive barrier to stay ahead of the insect’s life cycle before they hatch and mate again. Consistency is key when trying to stay preventative. If none of these factors apply to your service please give us a call and we will be happy to answer any of your questions or concerns. 🙂