Experiment to determine the best drain unclogger

Project Farm is one of my favorite YouTube channels because the guy who makes them conducts useful tests to determine whether or not common tools and materials are all they're cracked up to be. In this video, he tries a bunch of different drain openers to break up hair and soap, vegetables and bacon grease, and a piece of tape and a paper towel. He also checks to see if the various uncloggers damage pipes.

The verdict: Drano, Liquid Plumr, and lye all get an "A." Clobber and hydrochloric acid both get a "B," and Drain Sticks and Roebic get a "C."