If a cat sprays inside the house, then the smell of the urine would be quite bad. The smell would be bad even if there is one cat in the house. Now imagine if you have 3 or 4 cats in the house and all of them have this habit of spraying inside the house daily. The smell would definitely be unbearable. If you have more than one cat in the house and if you have spraying issues with your cats, then you should definitely be looking for ways on how to stop cats from spraying.
Before starting to find out how to stop cats from spraying, you need to first understand why cats spray. Well, you cannot really blame them. It is their natural behavior. All the animals in the cat family are designed by nature to mark their territory. You might have seen the same behavior in big cats. If you had seen documentaries on tigers, lions or even leopards, you would have seen them spraying on trees which simply means that they are marking territory. Domestic cats also do the same. The only difference is that when they do it at home, it would annoy you and your family members. You simply need to accept this fact and look for methods on how to stop cats from spraying.