Wasps

– Look for umbrella-shaped nests under eaves.
– Watch for wasps around door frames.
– Avoid nests near kids play areas.

Direct aerosol wasp freeze applied at night; nest removal after confirmed colony knockdown; residual treatment of attachment site to deter rebuilding at same location. A pro treats the nest at night when wasps are still. The nest is taken down once the wasps are dead. The spot is then treated so they do not rebuild. Trying this in daylight risks getting stung.

We treat nests at night with aerosol freeze. Then we remove nests and treat the site to deter rebuilds.

– Inspect eaves, door frames, and window casings each spring for early nest construction.

– Apply residual repellent to common nest sites (eaves, shutters) before paper wasp season.

– Seal gaps in eaves and soffits to reduce protected attachment sites.

– Wear protective clothing and approach nests only at night when wasps are inactive.

– Remove and dispose of knocked-down nests promptly to discourage recolonization.

– Inspect eaves and shutters each spring for nests.

– Seal small gaps in soffits and trim openings.

– Avoid sweet drinks and food near picnic areas.

Open, umbrella-shaped paper nests suspended from eaves, door frames, windowsills, and tree branches; nests are small (20–75 cells) and visible; colonies peak midsummer and die off by first frost. Paper wasps build open, umbrella-shaped nests. You often see them under eaves and door frames. The nests are small and easy to spot. The colony grows in summer and dies off by winter.

Wasps build nests under eaves in Portland summers. They are common near porches and sheds.