Wasps have set up home in the cavity (top & bottom corners) of a bedroom room window.

How to get rid of wasps in cavity wall. Otherwise use the spray stuff, after dark when the wasps are not active. Have used foam spray on a. Much to our neighbours and our delight.

Seal off any entrances or exits into the area of the wall where the wasp nest is located. Although the wasps are entering the air brick, the nest may be up to 6 feet away under a building or it may be directly behind or to the side of the air brick, ie: Initially, you need to observe their pattern of entry and exit to the nest.

One of the easiest ways to repel wasps is with about two tablespoons of dish soap in a spray bottle of water. Then seal up the hole and any others before next spring. A wasp nest in a bush or shrub requires you to stand about 15 feet from the nest with a powder insecticide;

The soap clogs their breathing pores and will cause them to die in. One excellent way to get rid of wasps is with vinegar. It should just be big enough to fit the applicator inside for the pesticide.

Using a drill, create a small hole inside the wall near the location of the nest. No nests are visible but there is a lot of wasp activity. The jam and the vinegar will attract the wasps and when they get in, they won’t be able to get out.

Use a lure trap in the area of the nest to attract the wasps away from the colony so that there are fewer wasps in the nest to treat the area. This type of spray is the most effective for killing wasps quickly so they will no longer be a problem in your cinder. Use caulk or a similar sealant.