After dusting in the void where the wasps have a built a nest you can try spraying the siding with a product such as talstar p.
Wasps in soffit vents.
Wear a breathing mask and.
I think they have lived there since i moved into my house three years ago.
Spray an insecticide into the vent to kill any wasps that are currently in the vent.
How to get rid of wasps at the soffits.
If you can see the wasp nest you can buy special sprays that will allow you to stand about 10 feet away and shoot at them.
How to get rid of wasps in roof vents step 1.
The goal is to put powder where they walk so they pick it up on their legs and take it in to the nest.
Https amzn to 2muyifp i heard a buzzing sound coming from the vent in the bathroom and couldn t imagine how i was going to get them out o.
You need to see where they land and then how they crawl though the hole.
You need to firstly just watch the wasps.
Check your attic for.
Make sure to wear protective clothing and goggles both for the overspray if the wind moves aginst you and for some angry wasps.
Cover the vents with plastic bags for several days to prevent more wasps from going into the system.
If you cant get the dust where you want it fro the puffer bottle put some in a small pot and use a paint brush to apply avoiding breathing it in of course and don t fall off the ladder while doing it.