Abstract: A device for supplying cleaning material for the automatic cleaning of a flush toilet having a tank with an auxiliary aperture comprising: a tube adapted for holding the cleaning material and adapted for insertion into the auxiliary aperture, the tube having a first portion adapted to allow it to pass through the auxiliary aperture, and a second portion designed to be external to the tank when installed therein. The device further includes a dosage mechanism disposed in the first portion of the tube for dosing a quantity of cleaning material, adapted for dispensing the quantity of the cleaning material into the tank upon flushing of the toilet.