What is inside the starter kit? January 21, 2020 19:10 Updated Follow The starter kit is composed of a Willo device, 1 mouthpiece and 2 cartridges of Willo toothpaste. Related articles Willo doesn't fit on the countertop of my bathroom, what can I do? Is Willo approved by the American Dental Association? Or any other dental associations? Do I still need to floss after using Willo? Is Willo a waterflosser? Where else can I buy Willo outside willo.com? Is is safe to swallow the toothpaste ? How much toothpaste do you inject?