Jim from Jacksonville writes
It's pretty obvious roaches were using this as an ingress point into the house. Can I put a packet of this in the wall- by just dumping in the powered, not mixing it, before I seal it up?
Demon WP Insecticide cannot be applied in the powder form. It must be mixed with water. You may want to take a look at our Roach Control Articles for more information.
Answer last updated on: 10/23/2018