Can someone help me with my cat urinating on furniture

My cat urinates on all our wood furniture, which I clean each time with specific cat repellant, but then she does it again. How do I get her to stop? I want a natural alternative if possible.

Melissa's answer is a great one.

This is my standard answer to out-of-the box urination problems - you may find the links to be helpful:

First, take her to the vet - urinary infection &/or urinary crystals are the most common cause for cats to start going outside of their boxes. Tell the vet what's going on, and ask for a urinalysis. If she's ill, she's in pain and can't help going out of the box occasionally - behavioral remedies will be useless until she's treated for the urinary health problems. Cats are good at hiding illness and pain (it's a survival tactic), so often the only clue you'll get that your cat may have urinary health problems is out-of-the-box urination.

If she checks out OK at the vet, it's possible that something about the litterbox itself, the litter, the box location, etc. is bothering her. See these links for suggestions:

http://www.catinfo.org/litterbox.htm...

http://www.vet.cornell.edu/fhc/brochures...

Those links don't mention it, but I highly recommend trying Cat Attract litter - it's available in most pet supply stores.

Stress can cause inappropriate urination - cats can be stressed sometimes by things that we don't even notice, until we know what to look for. This article explains stress in cats & how to address it: