Follow the spread. Have fun while learning about how germs spread and the importance of proper handwashing. This easy-to-use kit provides safe interaction tools for demonstrating how easily harmful bacteria and viruses can transfer from one surface to another.STEP 1: Apply a small amount of Germ Powder to hands or other surfaces. STEP 2: Use the included Germ Tracking backlight to magically reveal the " germs" . STEP 3 : When finished, wash off the powder with soap and water, and than use the blacklight again to check your handwashing skills.Includes:• Germ-Tracking Blacklight (3 AAA batteries required, not included)• Glow Powder• Activity Suggestions