One of the crewmembers entered the manhole to unclog the hose.
Drano is a chemical product designed to unclog drains.
After you unclog the vacuum, don't forget to replace the paper bag.
If you have mild acne, acne skin care products containing salicylic acid can unclog pores to treat current pimples and prevent future breakouts.
Murad Acne Clarifying Mask: The mask uses bentonite, kaolin and contains 4% sulfur to get rid of excess oils, unclog pores and kill acne-causing bacteria.