Dog/Puppy Stain & Odour Remover Specially formulated with bio-active enzymes to attack urine at the molecular level, CSI URINE Dog/Puppy Formulation removes stains and odours completely. Contains no masking deodorisers. Safe to use around dogs. CSI URINE uses Smart Science, not Harsh Chemicals, to Remove Urine Stains Completely. How is CSI URINE different from every other cleaner? Pet urine is no ordinary stain, so CSI URINE is no regular cleaner. CSI URINE uses a combination of special enzymes and enzyme-producing microbes that attacks stains at the molecular level. What are enzymes and what do they do? Enzymes are natural substances that help bio-chemical reactions to occur. They act a bit like a key that only fits into a specific lock to make it turn. Pet waste is the lock into which the CSI URINE key fits. The enzymes in CSI URINE only act on certain stains, like urine, faeces, blood and vomit. These are all protein stains that the enzymes in CSI URINE break down into harmless dust that can simply be vacuumed or brushed away. The enzymes in CSI URINE are biodegradable, environmentally-friendly and will not harm pets or humans, unlike many ordinary cleaners that contain corrosive substances like bleach or acid.