I only make it to the pool a few times of year, but I still think of it as one of the great joys of summer.

You can sit outside in a lounge chair with a favorite book and gaze at the water. Then hop in whenever it gets a little too hot for comfort.

But you know what always happens when I’m at the pool? I have that nagging doubt about the water. Is there pee in there? Sometimes I even suspiciously eyeball other pool patrons to see who might be guilty.

But I think we’ve all wondered about pee in the pool at one time or another. And this official pool pee detector is here to help. Just don’t dunk it in the water. Use it poolside or while thinking about your favorite swimming hole.

Download this PDF, print, fold and find out the truth.