Strike of the Sweepers, 4 (Janitors #4) (Paperback)
The stakes have never been higher, and you've never seen squeegees do this before It is a wild and slightly unsanitary ride as Spencer, Daisy, and the rebels find themselves chased by Mr. Clean's new and terrifying breed of Toxite: the Sweepers. Time is short. With the fabled Manualis Custodem in hand, Spencer must figure out how to summon the founding witches if they ever hope to mop up and save education.
Tyler Whitesides worked as a janitor at an elementary school to put himself through college. He is the bestselling author of the Janitors series. He graduated from Utah State with a degree in music. In addition to writing YA novels, Tyler is an avid composer and arranger of instrumental music. He and his wife live in Logan, Utah.