The best approach to odor problem in cats would be to obtain a urine sample for culture by withdrawing it directly from the bladder with a needle, in order to identify the bacteria involved and to pick the best possible antibiotic based on sensitivity testing, which can be done in conjunction with the culture. If the urine cultures were negative it would make the possibility that the problem is due to other causes, such as chronic interstitial cystitis, more likely. This is a hard condition to treat but there are medications that seem to help some cats.
The first is to use an antibiotic that has been made into a flavored gel or liquid by a compounding pharmacy. Many antibiotics can be mixed with flavorings without altering their effectiveness. There is also the possibility of making the antibiotic into a transdermal gel, which is applied to the skin and carries the antibiotic into the body. This approach works well with some antibiotics. The antibiotics do sting in most cases and it is important to realize that and to be careful not to get bitten or scratched when the cat gets tired of the injections and starts to retaliate for
them. If none of these things is found and the problems continue to recur it may be necessary to do urine cultures a week or two after stopping antibiotics and continuing them again if the cultures show bacterial growth, then repeating the process until the cultures are negative may be necessary. If your vet is unfamiliar with transdermal gels a compounding pharmacist familiar with medications for cats should be able to help in finding an appropriate medication. Spunk off spray is also very effective when it comes to odor control of your pet.
As regal and serene as they may be, your feline friend often leaves you with a cat urine problem. Cat urine, vomit or feces may be even more noticeable to your visitors.  Nothing to be ashamed of pet odor comes with having pets.  
Visit our home page for great discounts on pet supplies and products.