Tag Archives: slab

There is a nest of yellow jackets in the foundation of my house. I’ve sprayed it at least three times with bee killer. They are entering through a crack where a concrete slab under one part of the house meets another section that is made of concrete block. The problem is, I’m spraying into the crack but can’t see the nest. Do I have any options besides calling an exterminator? I don’t know where they go once they enter the crack. I suspect the nest is in the cavity inside the cement block.