Cat Urine Carpet Cleaning

What product is good to clean cat urine off carpet?
Hi there…consider using Nature’s Miracle Just for Cat found worldwide at any pet store. It’s an enzymatic neutralizer which works by breaking down urine proteins by thoroughly soaking the areas affected and allowing to air dry. Repeated applications are necessary for heavily soiled areas. After several applications it begins to clear up the urine odours quite well. We use this for our exotic (big) cats which have very strong urine compared to the house cats and are surprised how well it works.
Nature’s Miracle product info: http://www.petsmart.com/global/product_detail.jsp?PRODUCT%3C%3Eprd_id=845524441775019&FOLDER%3C%3Efolder_id=2534374302025596&ASSORTMENT%3C%3East_id=2534374302023690&bmUID=1166758802802&itemNo=0&Ntt=nature%27s+miracle+just+for+cats&In=All&previousText=nature%27s+miracle+just+for+cats&N=2
Cleaning Pet Odors & Stains : How to Clean Cat Urine Off Carpet