In the training video you can see how simple the installation process is. 

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✓ Open the floor drain cover

✓ Insert the cylinder into the sewer pipe 

✓ Turn it so that it is at a 90 degree angle to the floor

✓ Check that the rubber "sits" in the right place

✓ Open the water tap to the middle of the cylinder

✓ Close the drain cover back

✓ That's it! no smell!!