I know someone who got cat wee out of her floorboards by using a baking soda/peroxide mixture -- 1/4c baking soda + 1qt peroxide + 1tsp dish soap. Mixture is only good for the day it's combined, and it's also good for getting rid of skunk spray (just in case you need to know).
Pet stain locator thing = black light. Can be purchased for about $20 at PetSmart, or much cheaper at a do-it-yourself type of hardware store. I believe it's just a regular black light... they just like to give it a name and charge extra at a pet store.
Feliaway is the pheromone spray, only place I've seen it is at a Pet supply store though... not cheap, but has worked well for me in the past.
Edit: New carpet, padding, and sometimes furniture can give off an odor that to people is the "new stuff smell", to a cat... it's a place to pee.
When my little guys were puppies, Emma peed on my dining room floor.I tried a spray-on by Hartz called pet urine remover from Petsmart. I don't know what's in it, but following the vet's advice, I sprayed it on the carpet, and after it dried, put several large books around the spot. Emma has never gone back to that spot (or peed on the floor again). Stop here for short version.
Vet's reason: once an animal has used a spot to relieve themselves, they will return unless you do something to prevent them. Hence the big books. Emma could never return to the same spot. Hovever I made the room inaccessible to her so she could not get back in. She was quickly housebroken afterwards.
Amanda on Sep 27 at 10:27 AM