1. Snot Now, Snot Ever

A new recruit changes the dynamics in the lab as Snot Faucet's cold threatens a sticky end for everyone!

2. Pimple Fever

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.

3. Arachnattack

A horrible, hairy monster is unleashed as Septico's arch-nemesis arrives for an inspection of the Yuck Lab.

4. Dirty Rotten Birthday Girl

Septico's attempt to throw Pristine a birthday party turns into a disgusting food eating competition.

5. Fungus Humungus

Pristine's fear of fungus could destroy the lab.

6. Enter the Toothworm

Septico tries his hand at wormcharming and Pristine hides a toothache when their dentist Aunt comes to visit.

7. Septico's Felonious Funk

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...

8. That's So Fly

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.

9. Gastrov Flatulinsky

Septico challenges World Fart Champion Gastrov Flatulinsky to a farting competition.

10. Attack of the Yucky Plants

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.

11. Urine Luck

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.

12. Parasite Pirates

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.

13. No Guts, No Glory

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.

14. The Yuck Trifecta

When Pristine comes down with an increasingly more disgusting series of yucky conditions - Septico must save her from her body's own disgustingness.

15. Pristine Hair-Wolf

A horrible, hairy monster is unleashed as Septico's arch-nemesis arrives for an inspection of the Yuck Lab.

16. Kung Poo

Septico's quest to do the perfect poop brings an ancient and dangerous curse on the lab.

18. Yuck Lab Z

Septico and Pristine seem to swap personalities after they're stung by zombie parasite wasps.

19. Roach Motel

Septico's fascination with cockroaches causes chaos when he invites a specialist cockroach trainer to the lab.

20. The Big Stink

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.

21. Oh Rats!

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.

22. Everything's All-Mite!

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.

23. Around the S Bend

A monstrous Fatberg emerges from the sewers to wreak havoc on the lab!

24. Blisters and Shingles and Warts! Oh My!

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.

25. All's Yuck That Ends Yuck Part 1

Reeling from Pristine's betrayal, Septico advertises for her replacement and is visited by a seemingly perfect candidate.

26. All's Yuck That Ends Yuck Part 2

The fate of the lab is at stake as the gang is held hostage by their new boss.