Is there a chemical that can be put into swimming pools that changes color when somebody pees in the pool? - Quora
![Amazon.com: SmartSign 14 x 10 inch Funny “Warning - This Pool Is Equipped With Urine Detector” Metal Sign, 40 mil Laminated Rustproof Aluminum, Blue, Black and White : Patio, Lawn & Garden Amazon.com: SmartSign 14 x 10 inch Funny “Warning - This Pool Is Equipped With Urine Detector” Metal Sign, 40 mil Laminated Rustproof Aluminum, Blue, Black and White : Patio, Lawn & Garden](https://m.media-amazon.com/images/I/61Eu000F8vL._AC_UF894,1000_QL80_.jpg)
Amazon.com: SmartSign 14 x 10 inch Funny “Warning - This Pool Is Equipped With Urine Detector” Metal Sign, 40 mil Laminated Rustproof Aluminum, Blue, Black and White : Patio, Lawn & Garden
![Urine Detector Warning Sign Pee Pool Signs spa Swimming Swim hotub | Indoor/Outdoor | 14" Tall : Amazon.in: Office Products Urine Detector Warning Sign Pee Pool Signs spa Swimming Swim hotub | Indoor/Outdoor | 14" Tall : Amazon.in: Office Products](https://m.media-amazon.com/images/I/51U9ul1mipL._SR600%2C315_PIWhiteStrip%2CBottomLeft%2C0%2C35_PIStarRatingFOURANDHALF%2CBottomLeft%2C360%2C-6_SR600%2C315_ZA12%2C445%2C290%2C400%2C400%2CAmazonEmberBold%2C12%2C4%2C0%2C0%2C5_SCLZZZZZZZ_FMpng_BG255%2C255%2C255.jpg)