It has you dilute the small bottle with some water in the spray bottle yourself. You just buy the refills as needed after that. It is eco-friendly, which is important to me when looking at better ways to clean.
I have a small dog with an unfortunately small bladder. She's impeccably well trained, but an accident has happened if I forget her usual go-out time. On light colored carpet, it's imperative that I get any messes up as quickly as possible to avoid smells and staining. Most of the cleaners I have tried in the past just add a scent on top of the smell, but this one simply eliminated it! I sprayed it in a spot of urine and let it set for 10 minutes and then wiped it with a microfiber cloth. You can't tell where the spot was or smell a thing. I am honestly very picky about pet stain cleaners and I was very impressed.
I love that it's more safe to use (even for people like me with bad immune systems!) and that it actually works! If you have a pet, you need this cleaner. It makes life much, much easier.