Discovery Channel sent us this brand new preview clip “Leech Trapper” from tonight’s episode of “Dirty Jobs”.

Mike heads to Waubun, Minnesota to team up with the boys from Bartos Bait & Fish to catch leeches that will later be sold for fish bait. Unfortunately for him and the crew, catching leeches is done in a remote lake where the main prey seems to be humans – with mosquitoes the predator! Once the traps are emptied, they head back to the shop to learn how to separate and package the leeches for resale. Then, Mike heads to the Green Tripe factory in Hollister, California where he helps make B.A.R.F. (Biologically Appropriate Raw Food) for dogs.

Leech Trapper premieres Tuesday, Oct. 28 at 9pm ET/PT only on Discovery Channel.