Yellow jackets in retaining wall.
Yellow jackets in retaining wall.
Press down firmly and seal off the outer edge with tape so that it is airtight.
They ll die on contact.
Seal off any entrances or exits into the area of the wall where the wasp nest is located.
Follow up the spraying by dusting the opening of the nest with an insecticide such as tempo dust.
If yellow jackets have gone into the walls during cold weather some of the reproductive yellow jackets may survive in the walls.
These pests are quite inactive during the night which would ensure that your activities would not trigger them thereby facilitating a complete eradication.
There were a few larger gaps so i decided to fill them in with other stones.
I used 4 cans of bee killer and they are still all over the place.
When i put the first stone in about 15 bees yellow jackets came out.
If a do it yourself treatment is done wrong the consequence is a house full of wasps.
Use caulk or a similar sealant.
Wasps yellow jackets in a wall are a serious problem.
Pyrethrum aerosol sprays such as pt 565 plus cv 80d or cb 80 extra work well to kill yellow jackets and break up their nests.
You can make a yellow jacket trap out of a 2 liter bottle.
The yellow jackets can actually use the drywall for nest material leaving only a layer of paint between their nest and your living space.
If the nest is in a very warm location however the whole nest could survive the winter.
Then wait for the yellow jacket to land seal the jar or bottle and dispose of it safely.
I am not 100 sure they are yellow jackets but i believe they are.
Simply cut the bottle in half fill the lower half with sugar water and place the upper half upside down inside the remaining lower half.
The ideal time to get rid of yellow jackets from the wall cavities would be night time or early morning.
This will not only prevent wasps from escaping a pesticide application only to return later but it will also keep the wasps from exiting the nest by another hole to attack or to flee into other parts of the home garage and attic while the treatment is being applied.
You may also be able to hear the yellow jackets moving inside the walls.
Spray the pyrethrum in the cavity where the yellow jackets are living.
I have a sandstone retaining wall.