An older cat can develop litter box issues

First of all, you have to make sure that your cat’s litter box is easy to access and clean. 

“Your first step is evaluating any medical cause of house-soiling,” says Dr. Pittari. “Urinary infections, constipation, arthritis, and muscle weakness are just a few of the reasons an older cat can develop litter box issues. Your vet can evaluate the various medical issues and address environmental concerns that may be contributing to the change in behavior.”