Crosswalk Buttons

Crosswalk buttons are considered a safe invention. You push the button, wait for the walk signal, look to the right and to the left to be sure, and cross the street. Sounds pretty safe, right? Wrong! Studies show crosswalk buttons have high levels of adenosine triphosphate (ATP), a molecule that signals bacteria, yeast, and mold cells infections. Around 41% of all crosswalk buttons are contaminated.