I use it to pre-treat my carpet in heavy stained spots, but it's also VERY handy for when my puppy has accidents here and there. Instead of cleaning my carpet all over again (no way, it takes too much time), I just spray this and clean it off. I think this works better than the concentrated 2X formula, not to mention its scent is even better. If you own a puppy or a pet that isn't fully housebroken yet, buy it. You'll be glad you have something that cleans your carpet easily and fast without the use of a cleaner.