We recently got two cats. Obvious there needs to a litter box but the question is where to keep it. It is currently located in a spare bedroom but that won't work long term. The best options are in unfinished parts of the basement. While this is a non-issue during warm weather it will be once it finally gets cold here. I heat from the finished part of the basement and simply keep the doors shut to the unfinished areas. For reasons that have been innumerably stated on this site I'd rather not try to have my precious heat flowing into an uninsulated area. I'm thinking of putting a doggy door into an interior door that way there is an opening but one thats low to ground. It would let the cats into the unfinished area and keep the hot air out. I may finish/insulate the room in the future, but its much lower on the honey do list. Sound like good idea?