I am very pleased with my KÖPPEN Ayurveda tongue cleaner. It did take me a few days after receiving to use the product; I kinda had to psych myself up for it. But the follow-up emails with video on how to use plus reiterating the benefits really helped. I am so glad that I did use it! Immediately after incorporating it into my twice-daily routine, I noted the benefits. And after the gunk factor from day one - everything has been much better/easy to maintain. I am so glad that I purchased this product and appreciate the product and the follow-up emails that helped encourage proper usage and benefits. Now it's the easiest thing that provides excellent results. Highly recommend!