To provide a dirt remover capable of discharging foul water (47) after filtering dirt (46) automatically when the foul water is accumulated, controlling suction of the dirt at hand, and absorbing oil containing the dirt (46) and the foul water (47).

In this dirt remover, a liquid level sensor (8) is installed to detect a storing state of the foul water (47), the foul water (47) is discharged by a drainage pump (12), a hand switch unit (10) is attached to a suction hose (9), and an oil adsorbent (31) is set in a dirt screen (30).