A vet told me once to have more than one litter box and that there should always be a few more litter boxes than the number cats you have. Sometimes cats like to have options. Cats also do a lot of things by smell, and if the carpet/floor area around the litter box is dirty, it may be confused and believe that's actually in the litter box. If the previous inhabitant had pets, those pets may have left behind a scent or even pottied in that area before. Try having your place steam cleaned with enzymatic cleaners made especially for removing pet odors. You can add some to your own steam cleaner too. Experiment with different litter types since they may have sensitive paw pads. Some brands dont absorb odors that well either. I recommend Fresh Step or an alternative like Arm and Hammer Natural Corn Litter.
at 12:15 AM on Feb. 25, 2011