Questions? comments? suggestions? issues? Close all air bleed valves on your radiators, then close the drainage valve and remove the hose by holding the hose up you will ensure any remaining water drains off. I don't have to look for another baking soda + vinegar when i run out of baking soda coca cola is suffice to remove my kitchen sink clog. Awesome service quick to respond! thanks! How do i use drain out bathroom in a regular bathtub, sink or shower drain? For evening, weekend or holiday service,.