For effective urine removal, how much UrineFREE do I need to use?

The amount of UrineFREE that is needed to remove urine depends on the amount of urine in the carpet.  If your dog or cat has repeatedly urinated in the same area, a significant build-up of urine may have resulted. Removal might require more than one 500ml bottle of UrineFREE if you have cat or dog urine odour and stains throughout the house.