Heats and loosens debris and grease in drains, but is non-flammable and non-explosive. Anthony and jake came out and unclogged my drain! did a great job , fast , and knowledgeable! Once you have got your hands on a few quotes, go through them all with a fine-toothed comb check that each of them offer comparable. John and his guys have come to the rescue more times than i can count somehow, plumbing problems always crop up at the worst times (right before the weekend, right before.