I have a bit of news. 1st of all, before I found Xcluder (more on that later...) I had my coffee grinder on screens, on top of my toaster, as a guard, for years, once I had cleaned and saved it. I put two overlapping stove screens, the kind you get from lab supply companies to shield glassware from electric heat, and then my little Cuisinart grinder on top of them. Stopped the mice from getting in, 100%. But what REALLY solved my mouse problem was moving every appliance, and radiator cover, and stuffing Xcluder into all the holes in my floor. Water, electrical, tub access panels, poor moulding/wall architecture... anything and everything, BEST way to stick it to those cute but FILTHY little vermin is to NOT let them in inna 1st place. It's only been a few months but I haven't seen 1 single rodent since the Xcluder project. I HIGHLY recommend Xcluder. And also... I still have my little Cuisinart toaster, and I still love it.