| Speaking as the slave to 8 cats, all who have interesting personalities, dried/old pee is one of THE most difficult smells to eradicate completely.
The ONLY thing which I've been able to do is to soak in cold water and baking soda for about 2 hours; change water, do the same thing. Then soak in warm water with some "Shout" and then rinse well, and then....use Urine-Gone or Nature's Miracle and soak in that, changing the water out regularly. And then, spray FOLEX on it...it helps with the neutralizing. Rinse it out.
Then. Wash in strong detergent and wash again. Do NOT dry (or allow to get dry) until you can grab a piece of fabric and NOT smell any remaining urine at all. Wash until you can't smell it at all, and ONLY then give it a dryer session.
And, to be honest, while this has saved many articles of clothing in my house, many articles also have had to be tossed. If one of the cats has a temper tantrum, and pees on something, unless I really, REALLY love the piece (or I need it), the trouble to save it is often far worse than dumping and replacing if needed.
Good luck.
Best-
Noni
__________________  Apparently, I have a warped sense of humor. "Who knew?" |