Accepted Answer

Hi there and thanks for your question.

This is definitely a frustrating problem! You have already done the first step I usually recommend and that is to make sure there isn't a medical cause. If the urine tests were clear then this is not an infection or crystals. However, if the cat has not had any bloodwork done this is a good idea to do. Sometimes a hidden health problem such as a thyroid issue can cause stress which could bring this type of problem on.

However, if the tests come back as normal then this is a behavioural issue. Some cats will urinate in inappropriate places because of stress, but often it is hard to find the source of stress. The first thing I would do is if possible, restrict his access to the areas he is doing this.

I would also advise getting a new litter box as sometimes odours can collect in a box we have used for years. If you have more than one cat then you should have a litter box for each cat, plus one extra. Do your best to clean these every day. If you have a covered litter box, get rid of the cover as many cats hate the odours that are in these boxes.

If all of this is done and he is still doing it then you can talk to your vet about medicine to help reduce his stress level such as amitryptilline.

You may also want to look into a product called Feliway. This comes in either a spray or a plug in diffuser. It diffuses a feline pheromone which has been proven to help reduce stress levels. However, it is a little pricey.

Here is some additional information - be sure to check out the links on the right hand side of the page too:

http://www.veterinarypartner.com/Content.plx?P=A&S=0&C=0&A=633

I hope this information helps! If you have more questions regarding this problem, just hit reply. If I am online I will respond right away. Otherwise I will respond as soon as I come online again. Or, if my answer is sufficient, then please hit accept. Thanks!
Dr. Marie.

The above is given for information only. Although I am a licensed veterinarian, I cannot legally prescribe medicines or diagnose your pet's condition without performing a physical exam. If you have concerns about your pet I would highly advise contacting your regular veterinarian.

Expert:	Dr. Marie
Pos. Feedback:	100.0 %
Accepts:
Answered:	5/24/2009

Veterinarian

Compassionate licensed veterinarian with >20 years experience with cats, dogs and pocket pets