We have been using NokOut for years. The first time we tried it was when we moved into rental unit. We used to to spray moldy areas. It worked really well, then we moved down the street to a different duplex and one of the bedrooms smelled like an old bar. (you know how that smells) We sprayed everything! The carpet had been taken up so we sprayed the wood floor well too. It totally took all the smell away! We sprayed the whole house with it before we moved in. It worked wonderfully. We sprayed everything in the new home we just bought as well, and any left over odors are gone.
We have also used it when the mice happily built a nest in my husbands car and then died. It took care of that smell too. And i have used it on antique furniture I buy and re sell as well. It takes that old musty smell away. Its great. We tell everyone about it!