Castaways Get Dirty In 'Survivor' Mud Challenge (Exclusive Clip)

Suvivor contestants compete to see who can cover themselves in the most mud and run with it on their bodies.

The end is in sight for the remaining castaways on Survivor: Cagayan, and now the fight to be one of the final four kicks into overdrive!

In this exclusive clip from the upcoming episode Straw that Broke the Camel's Back, the remaining contestants must compete in one of the dirtiest challenges the show has to offer.

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The castaways have one goal: Fill their barrel with mud from the mud pit. What's the catch? They can't carry it in their hands. Instead, they must dive in, cover themselves in the gooey brown mess, and run back to their barrels, scraping off whatever mud clings to their skin into their receptacle.

Some try to coat their hair, others try to cover their arms in the stuff, but no matter how they do it, things get seriously messy very quickly.

This filthy episode of Survivor: Cagayan airs Wednesday, May 14 at 8 p.m. on CBS.