We’ve had three mice infestations during the last year. They love the inside of our boiler, which is down in our crawl space. Typical Catskills. Typically rural.
They slip inside it through the outside fresh air intake, which is about 12 inches off the ground and only a few inches above a naked pipe, from which we suspect they can easily reach up to get to the intake. After the first time, I put a window screen mesh over the intake; but they nibbled through that. After the second, I jammed steel mesh into the intake opening; and they wiggled around that.
After the third, the other day, the propane company technician who cleared them out suggested dryly, “Ya need a cat.”
Now there’s a high-tech solution for you. Except we can’t have a cat. We are in the U.K. a lot, and my mother detests cats and would never visit us.
“Maybe we should get a cat,” my wife joked.
The mice have done no major damage thus far, but we suspect it’s only a matter of time. So I’ve finally had enough. No mice are going outsmart Wile E. Nello.
I’ve constructed a multilayer defensive system. Please don’t call it my personal Maginot Line. Just don’t:
Its basis is two layers of 1/4 inch gap steel mesh tacked to the house around the entire intake/out vent. (The opening you see is the out vent; the fresh air intake opens on the reverse side.) I jammed layers of gorilla tape into all gaps (no matter how small) between the mesh and the house siding (which is not flat of course). A board below blocks a horizontal pipe that the critters may use as a “step up.” I even placed a blocking piece of metal next to another pipe, to the left, from which they might be able to jump across.
When my wife saw the finished product – which took me a couple of hours to construct – she declared, “You’re wasted writing books!”
“Oh, yeh,” I replied, “and at some point an anvil will probably come down on my head.” 😏