Sealing the Holes: Yes, we highly recommend sealing up any holes or gaps the wasps were using to access their nest. This is a great preventive measure to discourage them—or any other pests—from returning. The method you mentioned, using steel wool, spray foam, and latex silicone, is a solid approach: Artificial Wasp Nests: Hanging artificial … Continue reading Wasp Prevention and Sealing Entry Holes