Can toddlers use Willo? February 24, 2022 13:59 Updated Willo is unfortunately not made for toddlers and your child should be at least 6 years old to use Willo. Related articles Is Willo only for kids? I'm an adult and am interested! Can I pour another liquid in the rinse pod or the watertank? Mouthpiece Sizing Chart Does Willo work for children with special needs? Which kids will benefit most from Willo?