Tabitha Twitchit pissed all over my floor for 17 years...UGH! She started every morning telling me to "F Off, miaow!" too...it's where I picked up my bad language.. :0)
Soak the wood in the washing powder, then sniff...deeply...after a few hours...
Apparently, it breaks down the enzymes...
Don't ask me about them, whatever you do, 'cos I don't do the scientifact bit.