Wasp Season in the PNW: When to Call a Wasp Exterminator The Pacific Northwest is famous for its lush greenery, crisp coastlines, and mild summers. But it’s also home to a less charming seasonal visitor—wasps. Every year, as the weather warms up, these buzzing insects become more active, peaking in numbers during late summer and early fall. While wasps play an important role in nature, their presence near homes can lead to stings, property damage, and serious health concerns. The PNW’s ...