Insectiva and Sloppy Joe are out to try and ruin Valentine's Day.

Darko Crevasse and his army of living dead road kill set out to destroy Halloween.

Fartor plans to send the universe's gassiest meteor on a collision course with Earth.

The Grossologists and Lance Boil take a trip down memory lane.

Frederick Follicle is controlling everyone's hair.

Cute little Slitherbuddies mutate into giant and deadly snakes.

Roger Pinkeye is the only one who can save the day when Lance Boil looks to be unstoppable.

Lance Boil and Roger Pinkeye have decided to make Roger a Grossologist.

Lance Boil has been kidnapped.

Lance Boil frames Sloppy Joe as part of an evil plan to destroy Christmas dinner

Ty and Harvey end up surrounded by giant worms during their fishing trip.

Floating balls of light turn out to be swamp gas.

A major case of halitosis breaks out

Ty and Abby try to give an opera star antacid so he doesn't blow everyone away with his burps

Entomologist Petunia Archer receives a free trip to a spa that uses bug-based products.

An army of giant dung beetles pushing balls of poop are about to invade.

Lab Rat accidentally resizes some dust mites into giant monsters.

The team turns to Lance Boil to help them find what is causing all the zits.

Lance Boil creates a super-allergy causing ray-gun.

Roger Pink-Eye attempts to find out about Ty's and Abby's extra-curricular activities.

Sloppy Joe's stench gets worse during a heat wave.

The Grossologists must stop a plan that would make everyone go bald.

Joe's sitting on a garbage gold mine when he opens a fast food joint.

Lance Boil is creating a serious case of vertigo for Abby.

When alligators start showing up in people's toilets, doing your business becomes risky business. Meanwhile, inventor, T.P. Skinner starts selling the Gator-Guard 5000, a gator-in-the-toilet trapping system, so Abby considers him a prime suspect…or is he?