Our Petsmart sells 3 different shampoos. Ultra Clean, Hypoallergenic, and Deodorizing. They have at least one more available on the Rapidbath site, it's a whitening shampoo. The one I used last night was the Ultra Clean that came it. I picked up a 3 pack of the hypoallergenic, just because I didn't no exactly how the system would work. I thought maybe it would be a hard blast of water, so I didn't want anything irritating. I hope it smells as good as the Ultra Clean. My dogs will be alot cleaner than they usually are now that I have this, I used to put off giving them baths till the weather was going to be ok for awhile so they didn't immediately need another, but now I can give them one quickly with no problems. I am anxious to see how many baths I can get from one cartridge. Also, Sam usually has alot of big dry skin flakes on his back legs, his tail and on his back at the base of his tail that I notice when I dry him, but he didn't have any at all after just one shampoo. I usually never give him rawhide because he makes such a mess with it, but a couple days ago I was cleaning out their cabinet and found 2 of those little rawhide sticks and went ahead and gave him one. He got it all over his front leg like he usually does, I thought I would have to scrub that off with a wash rag or something, but it came completely off without extra scrubbing.