how to use:step 1:Before use, you should choose a suitable suction cup to install the product according to the size of the blocked pipe.Step 2:After the suction cup is installed, hold the handle and pump the pump rod to complete several full stroke pumping about 15-25 times, until the air cannot be pumped in and high pressure gas is obtained, and then the air tank can be inflated.Step 3:Block the pipe outlet and seal; pull the trigger to release high-pressure gas.the fourth step:If the first attempt fails, you can repeat this operation.Suggest:1. Make sure that the size of the suction cup is correct.2. Put a layer of waterproof membrane before use to prevent splashing water from getting dirty.3. The "suction cup" should be pressed tightly on the drain pipe. If the sealing is not enough, please add enough water (the suction cup is completely immersed in the water) to prevent air leakage and ensure the air pressure.Package Included:1x toilet air ejector1x pump4 suction cups of different sizes.