Cats are fastidious animals and use a litter box easily. If your cat suddenly stops using the box, there is something wrong. It could be as simple as the box is too dirty and stinky and your cat doesn’t want to use it. If the litter box is not fresh enough, your cat may find a less appropriate place to go. Stress can cause your cat to avoid the box. Stress can be caused by having to share the box with another cat, new family members including other pets, houseguests and even construction in or around your home. Take note if you have made any changes that would make getting to the box more difficult. A cat not using the litter box may also be indicative of illness as well. If you can’t find an obvious issue that may cause your cat to avoid the box, make an appointment with your McHenry, IL vet for evaluation and treatment. Visit this website Richmond Veterinary Clinic to know more.