Willo dispenses its own cleaning rinse during the brushing cycles thanks to the Willo rinse pods so no need to add toothpaste in the mouthpiece or in the water tank!
Willo is a brand new device with brand new mechanisms. As a result, we had to develop a specific cleaning solution in a specific pod that is compatible with the device. Thus, we don't recommend that you use any other solutions or cartridges than the Willo rinse pods, as they could impair the device and its efficacy.
For the same reasons, we don't recommend adding toothpaste directly on the mouthpiece or adding anything but water in the water tank.