Urine nuetraliser is just that, it lowers the ph of the stained area to about 7.5 preventing that orange flare up. Do not mistake it for removing the odour created by urine, for this use a proprietry odour nutraliser-- eg pro-chem odour nuetraliser as a pre-spray. Leave to work and then flush out. Treat the stained area when there is no residual urine odour, with the urine nuetraliser.