MOST pet shops sell spray products with enzymes in that take care of a) smells and b)stains. I'd go for the smells one first. The one I've got is in a dark blue trigger bottle, "True Blue Odour Kill", cost $16. Well worth the money. Useful on the carpet but I use it sometimes too with puss's kitty-litter tray, the bin, or any other time i think I catch a whiff of something unpleasant of organic origin.