Cat urine odor is the biggest problem cat owners face. More cats lose their homes to urine odor than for any other reson.
I wrote a little booklet about this that you can get for FREE just by signing up for the newsletter, CatLover Magazine. However, the instructions are also on:
although the instructions are more generalized on the website.
Before you get rid of your cat and face the same problem with another cat because you haven't deodorized properly, please read this page. It will help a lot! Who knows, maybe your "incorrigible" cat can be redeemed, and your relationship with your cat will be stronger for it.