“No! Your house won’t hold water then.”
They are not filling up the wall space, they are spraying it with a chemical that dries to a powder. That’s what WP means, wet able powder. It is a small amount that is designed to be found by the ants in its powdery state and it is done in the exterior walls only. It won’t even come close to filling the wall.
rwood
you misunderstood- I was joking that if you drill holes in your house, your house won’t hold water then