Dundas Jafine PGC4WXZW 4″ ProGard Exhaust Cap, 4″

I bought this as an exact replacement for the one I had. It’s two pieces which is handy because I only had to replace the screen portion. Here are a couple of problems with this – both with the cage portion: the spaces. I’ve always been told a mouse can get through a space no bigger than 1/2 inch. The openings at the top corners and the sides are considerably larger than that (and I had some mice in my basement). I have some white FlexTape that I cut into strips and applied to it to…