We've always had at least 1 box more than we have cats.
Buff and Cooper have 2 in the nursery, 3 if we are gone for a few days (neighbor looks in on them)
There are 5 others through out the house. Missy T has 2 or 3 she uses regularly. The boys use all 7 or 8.
Thanks Annie! I have 2 litter boxes and 2 cats but for whatever reason, they both like to use both boxes.
I usually scoop out 2-3x a day so hopefully that will take care of any potential issues.
Corrie
The only thing I would worry about is if the two cats don't have their own litter boxes, and if the litter is not particularly clean. But if you are scooping every day, you probably won't see Gus get any kind of infection.