I am so happy I purchased from Petlab….I was going to have to replace $3,000 worth of carpet in my mum’s house due to cat urine in one area. I just couldn’t get rid of the awful smell. So I decided to purchased a bundle and when it was delivered I got to work. Borrowed a carpet shampooer to make it easier to wet the carpet down….first application got most of the smell out but I could still smell a faint whiff. Got hold of a black light and found the slight glow in the edge of the carpet at the wall….one more application…..and we are done! I was amazed at just how effective this product is. I highly recommend it to anyone with pet smells in or around the house.