Good afternoon Martin. Today we completed your pest control service for yellow jackets. We treated the yellowjacket entry point up against the foundation and the one next to the sliding door behind the siding with a liquid residual insecticide. Please avoid this area until live activity ceases, which can take 5 to 7 days. If activity persists after that timeframe, please don’t hesitate to contact our office. Thank you for choosing Green Pest solutions and have a wonderful day.