Episode 1
A new recruit changes the dynamics in the lab as Snot Faucet's cold threatens a sticky end for everyone!
Episode 2
When Septico's long lost brother comes to visit, he's repulsed by the grossness of the Yuck Lab - until he accidentally gets turned into a poop loving housefly.
Episode 3
A horrible, hairy monster is unleashed as Septico's arch-nemesis arrives for an inspection of the Yuck Lab.
Episode 4
Septico's attempt to throw Pristine a birthday party turns into a disgusting food eating competition.
Episode 5
Pristine's fear of fungus could destroy the lab.
Episode 6
Septico tries his hand at wormcharming and Pristine hides a toothache when their dentist Aunt comes to visit.
Episode 7
Septico's quest to take his body odor to new stinktacular heights forces Pristine to redesign her latest invention, the Smell-O-Vac, for her...
Episode 8
Episode 9
Septico challenges World Fart Champion Gastrov Flatulinsky to a farting competition.
Episode 10
When Septico's college crush, Botany "expert" Egregious Flytrap visits the lab, the gang tries to impress her with various disgusting plants, not realizing she wants to use those plants in a diabolical experiment.
Episode 11
After Pristine turns down the chance to give a prestigious speech, Septico finds out she passed because she has urine control issues, and he's determined to whip her bladder in shape for her to give the speech.
Episode 12
When a crew of pirate parasites takes over the Yuck Lab and infects the gang, Septico has to figure out a cure for the various parasites.
Episode 13
The lab gang is left in charge of an annoying little girl with a tummy ache, as they scramble to prepare their submission for the World Yuckology Expo.
Episode 14
When Pristine comes down with an increasingly more disgusting series of yucky conditions - Septico must save her from her body's own disgustingness.
Episode 15
Episode 16
Septico's quest to do the perfect poop brings an ancient and dangerous curse on the lab.
Episode 17
When the lab is overrun by an ant colony, Septico and the team have to bargain with the ants - before the O'Cleans can send in the Cleaners!
Episode 18
Septico and Pristine seem to swap personalities after they're stung by zombie parasite wasps.
Episode 19
Septico's fascination with cockroaches causes chaos when he invites a specialist cockroach trainer to the lab.
Episode 20
Leonidis' locks down the lab when his favorite stinky sandwich gets stolen, so Septico has to expose the gang to various stinky animals to find the culprit.
Episode 21
When it's revealed that Durp-E is secretly keeping a pet rat in the Yuck Lab, everyone is shocked as to whom the cringing, shrieking aversion to them is.
Episode 22
Septico and the gang try to stop the O'Cleans from destroying the world's Mite population by creating an ad campaign to show that microscopic mites are actually cool.
Episode 23
A monstrous Fatberg emerges from the sewers to wreak havoc on the lab!
Episode 24
All the gang get painful and gross skin conditions when Pristine attempts to cover her spying by helping Septico get into the record books for the world's biggest blister.
Episode 25
Reeling from Pristine's betrayal, Septico advertises for her replacement and is visited by a seemingly perfect candidate.
Episode 26
The fate of the lab is at stake as the gang is held hostage by their new boss.
