Once an outdoor cat, always an outdoor cat, I think. The litter box is the worst part, not because of odor, I use the clumping kind that covers up all odors, but because of the dust. That dust can go everywhere if not contained. Right now it's in the bathroom under an unused vanity, so most of the dust gets contained except for a single side that's opened.

https://docs.google.com/spreadsheet/ccc?...amp;usp=sharing