Will rats/mice burrow through? Does this foam have some sort of repellent?
Rats can indeed gnaw through just about any type of foam including the Pur Black Foam. In most cases however these pests seek the path of least resistance and will often just look for an opening. Holes 2 inches and smaller should be stuffed with Stuf-Fit Copper mesh and then filled in with Pur Black Foam. Larger holes need to be repaired using appropriate material such as fine mesh hardware cloth, steel plates or concrete patch.
Answer last updated on: 06/16/2011