Nûby™ Baby Tooth & Gum Cleaner is formulated to be All Natural with the fun flavor of Vanilla Milk. Safe if swallowed, Nûby's Baby Tooth & Gum Cleaner is All Natural, Fluoride Free, and Non-Toxic. When using Nûby's All Natural Baby Tooth and Gum Cleaner, you can be confident that your child is not being exposed to harmful chemicals.