‘Dirty Jobs’ Returns to Discovery

"Dirty Jobs" is back for its 20th year on Discovery and host Mike Rowe is promising it’s the dirtiest jobs ever. This season he's renovating a pool filled with thick algae and recycling used hotel soap. Rowe even tries his hand at extracting deer urine which is used by hunters to lure deer during mating season. He also visits a factory that actually makes the green slime. He says "It just seemed like a good opportunity to have a couple tons of slime dumped on me."