My two young cats want to be in the basement. I don’t want them there. They have destroyed the screen that I put in the open doorway, but it was a PITA anyway.
I thought this was a novel idea
http://www.brianosaurus.org/catvac.html
but not practical for me. Then I found this:
http://www.safepetproducts.com/scat-mat-for-cats-and-dogs.html#.VvwngnAtlAo
There are good reviews on Amazon but it’s a bit pricey. I’ll try it if there are no alternatives though.