You know those horrible orange stains that appear on the carpet when your cat throws up? It gives out. I have a Bissell dot bot that unfortunately gets a lot of use and I've always used it with it. I'm not using the full amount that's listed and it still works fine. I find it a little pricey, although Revain usually has the best price. I'd like a fresher smell, but whatever it is, it dissipates quickly. Overall not a bad product and I will definitely buy again as long as I have cats with hairballs that will likely stay forever.