Cats were first domesticated about 4000 years ago. In ancient Egypt, the cat was not only considered as a vermin controller, but also as a member of the family as well. The custom of keeping cats spread around Europe, Japan, China and India. After the Middle Ages and a case of mistaken identity, the cat regained its place as a favoured pet. However, the cat might urinate where it should not. Here is a guide to cleaning the cat urine.