This video on how to get rid of cat pee smells has some interesting tips, but not all of them are advised by professionals who deal with this type of odor. Cat pee is one of the most difficult substances to clean. It's designed by nature to have extreme odor and stay where it has been deposited. Cats use their pee for marking territory and communicating with other cats, so it plays an important role in their lives. Cats can even use their pee to communicate with their owner to let them know when something is wrong with their health or environment. Down in Tampa FL I clean up cat pee for a living.
You can successfully get rid of the cat pee smell in your home by taking the right steps. The first step would be to get to any pet pee deposits while they are still wet. The best thing you can do is add water to the effected area, then extract it with a wet/dry vacuum. You can buy a 2 gallon wet/dry vacuum for around $20.00 at your local hardware store.
I recommend pouring lots of water on a fresh cat pee spot, about double the amount of urine in the area. You would be pretty safe pouring about 2 to 3 cups of water on an effected area. Let it sit for about 30 seconds and then extract it with the wet/dry vacuum. This method will get rid of over 95% of the urine out of the carpet. There will not be enough urine remaining to produce any odor. If you have dried cat pee in the carpet it's time to call a professional carpet cleaner to treat it with a pet urine removal treatment.