Homegrown Grossology: Icky Things in Your Everyday Life (Grossology)

Grossology: The Science of Really Gross Things! (Commemorative Edition)

Nitty-Gritty Grossology: Over 101 Disgusting Facts! (Grossology)

Untamed Grossology: Icky Things in the Great Outdoors (Grossology)

Would You Rather Grossology: A Game of Repulsive and Revolting Questions