I have heard rustling sounds coming from my exterior walls, which I am assuming is mice (or some other rodent) scurrying around in the hollow wall.
I have found a hole about 2 inches in diameter in my electricity meter box where a thick electrical cable enters the house, which I think might be where the mice are getting into the walls.
What can I use to block the hole that the mice won't be able to move or chew through?
When sealing a hole around an electrical entry cable, the best product to use is Plasduct. It is a putty like material, gray in color. You will find it in most electrical departments at the box stores or your local hardware store. Use it just like modeling clay, work it a bit to make it pliable, then stuff it into the hole around the cable as deeply as possible. I have never seen rodents or insects get through this stuff.
I fill the hold with caulk, then stick pins in it to deter mice from coming near. then cover with plaster. then tile the floor.
Quickest and easiest way is to stuff the hole with steel wool. You can also put screening material or similar metalwork over the hole.
