"Very effective addition to our oral hygiene. We bought for the kids (4 and 6), and it has made it so much easier for us to clean their tongues. I was a bit worried that because it was metal, it might be too harsh on the tongue. However, its not. It takes 5 or 6 swipes to get the tongue clean but that's a few seconds. Very easy to clean as others have mentioned. Very pleased with purchase, and I'm writing this six months after using it."