The prior tenants’ children used their closet as a toilet….
Hi! We just moved into an apartment and it seems the prior tenants’ children
used their closet as a toilet….bad urine smell. We’ve used a variety of cleaners that seem to surface clean, but as soon as they dry, the carpet smells again. Do you have anything that will work its way down into the carpet padding? Thanks, Kim
Yes, we do, Kim. 
Go to the left menu and check out The Pet Odor Elimination Kit
The three step instructions are here. Carpet – Padding and sub flooring.
We are here to help, if you have more questions.
www.nogc.com