Copy: What you can't see can hurt you
Description: This is a bus/Subway pole that is wrapped with heat sensitive thermal paper. (Chemical that changes color when exposed to heat. Similar to the famous mood rings) The layer beneath is a photo of germs as if seen through a microscope. When someone grips the pole the temperature from their hand reveals the photo. The pole is initally black and by gripping it, the heat sensitive paper leaves a lasting impression by showing the image of germs beneath.
Claim: Just because you can't see germs doesn't mean they're not there.
Media: Transit ad