“In his signature squiggly style, Macaulay pulls back the curtain to show just how it all goes down(so to speak).” —Booklist

“A perfect blend of humor and clarity - in text and in artwork - explains the anatomy of human waste, the mechanics of a flush toilet and the subsequent treatment of waste in septic and sewer systems.” —Kirkus Reviews, starred review

“A unique nonfiction offering that deals with human waste in a way that most other books have not. . .A boon to those looking to beef up informational offerings to meet Common Core standards.” —School Library Journal, starred review

“Macaulay reminds readers that while such language is precise, it can also be lively.” —The Horn Book