So my mum's elderly dog has started peeing on the carpet. Reading around I found that apparently once they've started doing it they can smell their own pee and are more likely to carry on, if you don't completely eliminate the smell, so I bought a bottle of "Rug Doctors Urine Eliminator".
The instructions said to thoroughly wet the area and then place a damp towel over it and allow to dry naturally, helpfully adding "enzymes need moisture to work".
So I set about with a huge jug of water pouring a sort of water path along the hallway carpet in the worst trouble-zone, sprayed the stuff... and then I re-read the instructions: "Thoroughly wet the area allowing product to penetrate to the carpet backing - I think I was supposed to "thoroughly wet" the area with the spray, not chuck a gallon of water over it before spraying it 
Will it even work now, if it ever dries?