PURPOSE: To provide a water-saving effect with a simple configuration by squirting each time an operation means is used while providing a sound such as freshet sound effect and music.

CONSTITUTION: With a user sensor 12, start and end of usage for a flush toilet are detected, and the usage period is measured by a timer circuit 16a. a solenoid valve 15 is controlled based on the operation of a squirt switch 11 to squirt a washing-water for urination while, if the usage period by the user exceeds a pre-set time, the electro-magnetic valve 15 is controlled based on the operation of the squirt switch 11 to squirt a washing-water for stool. A soundeffect circuit 20 generates a sound such as freshet sound effect and music for a specified period to a flush toilet based on the operation of the squirt switch 11 through a speaker 13.