Dumpster finds

[Jon A.]

Originally Posted by VintagePC

And yes, putting it in the sun will help.

The urea is what decomposes to produce ammonia, and that is driven by either enzymes (ureases) or heat in the presence of water. I suspect that decomposition is what makes the smell linger so long - you can "wash" the set and the ammonia goes away, but as soon as some water/humidity gets in there it will start to generate more and the smell comes back.

So theoretically, adding water and heating it means it will force the reaction to one side, stink like hell for a bit until all the urea has decomposed and the resulting ammonia evaporated... then the smell should be gone.

Ah, the science of removing the smell of cat piss. Everyone, well at least every decent person around here ought to know that. Just check out this recent screenshot from the free ads, and no, I wasn't specifically searching for cats, these results included everything free: