Hi, MMT. Welcome to iRV2.com.
We keep our cat's litter pan in the bathtub. It gives the cat privacy and helps keep litter contained for easy clean-up should kitty throw a little out of the pan while digging/covering. Just be sure the tub is dry before putting the litter box inside. The only real inconvenience is that you may occasionally have to share the bathroom with your feline.
2009 GMC Sierra 2500HD | Crew Cab | Standard Box | 4WD | Duramax/Allison
2000 Jayco Eagle 266 | FBS | TT
1986 Coleman Laramie pop-up -- Still in the family!!!