My dog has been unwell and had diarrhoea on my bedroom carpet. Dog been to vet and now better, but I have been left with a problem. As soon as it happened, I cleared up and washed the area with liquid soap and water. The next day, once the carpet had dried, it was obvious there was a stain, and it smelt vile, so I washed it with a proprietary carpet cleaner. Still smelt, still stained. I have since washed it twice more with biological washing liquid and used a pet odour neutraliser. Trouble is, when you wash it, it looks like the stain has gone, but as soon as it dries it is obviously still there, and I can still smell it. Any ideas? It is one of those carpets you can wash with bleach, although I haven't tried this. Would a bicarb paste work?
Over 40 years of having dogs, and I've never had this problem before, and I've cleaned a fair few shitty carpets in my time. Any ideas?