CSI URINE uses Smart Science, not Harsh Chemicals, to Remove Urine StainsCompletely. How is CSI URINE different from every other cleaner? Peturine is no ordinary stain, so CSI URINE is no regular cleaner. CSI URINEuses a combination of special enzymes and enzyme-producing microbes thatattacks stains at the molecular level. What are enzymes and what dothey do? Enzymes are natural substances that help bio-chemical reactionsto occur. They act a bit like a key that only fits into a specific lock tomake 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 inCSI URINE break down into harmless dust that can simply be vacuumed orbrushed away. The enzymes in CSI URINE are biodegradable,environmentally-friendly and will not harm pets or humans, unlike manyordinary cleaners that contain corrosive substances like bleach oracid. Our bodies use enzymes to digest food, and in a similar wayCSI URINE digests urine stains so that there's nothing left.