I totally get it. You're thinking this stuff can't really work. Or, will it really help me? You want clean teeth, healthy gums, a great smile. You don't have to worry, you can try Periogen risk free. We have an iron clad guarantee. Even if you decide years later you don't like it we will refund all of your money. We believe in Periogen and just want to help the world keep their healthy teeth and gums. Our product works if you use it regularly. We are confident you'll love Periogen, just as much as we do. But if you don't, no problem, you can have a full refund. But, we hope you try it again sometime because Periogen works!