Abstract: A cleansing device (10) for use with a colostomy or other body waste bag. The device (10) includes a valve body (12) having a passage (14) and a gate valve (20) positioned in the passage (14), an elongated handle (34) controlling the gate valve (20), a hose (28) connected to the inlet (16) of the valve body passage and adapted to be secured to a source of irrigating water, and a tube (22) attached to the outlet (18) of the valve body passage including a main body portion (22a) and a nozzle portion (22b) bent backwardly with respect to the main body portion (22b) into the colostomy bag. The patient may grasp the valve body (12) with one hand to move the nozzle portion (22b) of the tube (22) upwardly into the discharge opening of the colostomy bag and may thereafter use the same hand to squeeze the handle (34) and direct a flow of irrigating fluid into the interior of the bag.