I have an eight-year-old indoor male cat that shares the house with a cat (sister) of the same age. The male cat, Zack, has a bad habit of spraying furniture and walls, doors on occasion and we ...

Q-Recently, our male cat began spraying urine in the house. The cat is 4 years old, and was neutered when he was less than a year old. Our neighborhood has many cats, and many have visited our yard ...