Discover an easy and efficient tool to clear stubborn blockages. This pump action air pressure plunger is biologically friendly since no harmful chemicals are used but uses compressed air to clear blockages. Ideal for use on sinks, baths, toilets, showers and laundry tubs, the plunger is easy to use by simply pumping the unit to build up air pressure, placing the end into the drain and press the trigger. There is a pressure relief valve on the back side of the unit allows for the air chamber to be safely emptied without pulling the trigger if needed. It is recommended to block nearby drains to prevent air and liquid from escaping when the trigger is pulled.