I have the Petz Life.. but I must admit I have not been using it. His teeth are starting to show a bit of discolorization at the gum line... After I believe Kathryn V showed that photo of her dogs teeth I was amazed... I stopped using it because he hates..hates..hates it. As soon as he sees the tooth brush he runs from me & goes under the bed. I felt like he thought I was doing mean things to him so I quit... No more, he's getting his teeth brushed. I'm now using it daily... we'll see soon if it works for us
