I just did a deep clean on a funky chicken coop.
I had used hay that was too soaked with rabbit urine to be good bedding, with predictable results.
Getting down the bottom of the coop, I found the wood itself still funky, after much scrapping.
I wanted to hose or out, but I feared the worst, as funk plus wet can lead to more funk.
Then I remembered I had a 5 gallon cooler filled with the results of a cabbage ferment.
I dispensed it, sniffed it and finding it good, sprayed the coop with it.
Almost instantly the funk went away.
Corners, nest box every thing got spritzed.
I had made the ferment with this use in mind, but forgot it for more than a year, yet it seems to remain effective.