How often do I need to use Willo? June 23, 2020 13:48 Updated Follow Twice a day, just like how you would with a regular toothbrush! Related articles I saw a little bit of blood on my mouthpiece after I brushed with Willo, is this normal? Do I still need to go to the dentist for cleaning if I use Willo? Where else can I buy Willo outside willo.com? Is brushing equally effective for everyone? Should I rinse my mouth after I brush my teeth with Willo?