If your house is filled with cat urine smell is because your cat is peeing in different spots of your home. There are different reasons for your cat acting this way.

If you have a very well trained cat, then you must check the following list to determine the reason or reasons that are causing this behavior and your problems with having cat urine smell all over the house.

Main reasons why your cat can be peeing outside the litter box:

1-Medical problems

Your cat may have a urinary tract infection (UTI), which is a disease that causes painful urination. Your cat will associate the litter box with the pain, and he will start peeing in different spots in the house.

UTI makes your cat urinate more times and with less amount of urine, increasing the cat urine smell indoors.

If this behavior starts suddenly, it can be a symptom of UTI, so take your cat to the vet immediately.

Diabetes is a medical problem that causes excessive urination. Diabetic cats that develop high blood sugar levels will pass the excess sugar into their urine. The body responds by trying to flush the excess from the kidneys through urination.

2-The litter box is dirty

Cats want to pee in clean boxes. If their litter box is dirty they will find another place to pee. Change the litter box daily and wash it thoughtfully every few days.

3-Replacing the old litter box for a new different one

Cats are creatures of routine. If you have bought a new litter box, your cat will need some time to get use to it. In the meantime it is possible that your cat begins to pee somewhere else.

4-Your cat does not like the location of the litter box

The litter box should be in a quiet and easy to access room, away from the cat´s food and water.

5-Your cat does not know where the litter box

If you change the litter box location it is possible that your cat does not find it. Remember that cats are creatures of routine.

6-Your cat is spraying

Male cat spraying or marking may be triggered by a number of reasons: mating season, stress or different changes in the cat's life.

Spraying is a common cat behavior consisting on him depositing a small amount of urine on vertical surfaces, such as walls, furniture and doorways.

Spraying is not a litter box problem. Your cat is marking its territory, leaving a message for other cats.

7-Stress and anxiety

Cats suffer from stress when they have changes in their life. Stress can cause your cat peeing outside the litter box. A cat can develop stress due to:

1. Travel
2. A new family member, human or animal
3. Visitors
4. Injuries or other medical conditions
5. A new cat in the neighborhood
6. Moving to a new house
7. Changes in diet or daily routine
8. Absence of a family member
9. Noise
10. Illness

8-More than one cat sharing the same litter box

Some cats do not like to share their litter box. If your cat is one of those, chances are that he start peeing outside the box.

Having multiple cats in the same house can be a problem because they need their own space and they are very territorial. This means that they will start marking their space filling your home with cat urine smell.