Dealing with a cat peeing on the carpet can be quite frustrating. It often helps to first rule out any medical issues by visiting a vet. Ensuring the litter box is clean and placed in a quiet, accessible location can also make a big difference. Sometimes, using an enzyme cleaner on the carpet can remove odor and prevent repeat offenses. Have there been any changes at home that might have stressed your cat? Talking more might help us find a solution together.