Abstract: The present invention is to provide a dispensing device comprising a dispenser having an upper channel and a bottom opening for storing liquid cleaner; a connecting cup extended downward from the dispenser including at least one aperture on a bottom thereof; and a float in the connecting cup opposite the bottom opening. While the dispenser is mounted in a toilet tank, the float is adapted to either engage with or move away from the bottom opening as the water level in the toilet tank rises or falls. As such, the dispenser is adapted to automatically dispense liquid cleaner to the toilet tank or stop dispensing liquid cleaner to the toilet tank as the float falls or rises.