Urine-indicator dye

Urine-indicator dye is a fictional substance thought to form some sort of colored cloud in a pool to indicate the presence of urine. It's commonly believed to exist in the United States, Canada, and Spain amongst other countries.Experts on such matters say although a reliable dye could be produced, the trick would be getting it to react only to urine and not trigger in the presence of similar organic compounds likely present in swimming pools. It's not a compound anyone appears to be working on either, and understandably so.

However, the substance can be found through pop culture over quite a lengthy time period. In Barbara Leaming's 1985 Orson Welles - A Biography, Orson Welles and his friend Charlie MacArthur would play practical jokes on their friends by using a chemical that caused raspberry-colored clouds to billow in the water around the guilty swimmers. This was intended to be around 1937. Also, in an episode of Nickelodeon's The Adventures of Pete & Pete ("Splashdown"), a chemical called "Wee-Wee See" is used to catch a pool-peeing perpetrator. It won't display the ph color. If you want to see the scale please click on this link: http://en.wikipedia.org/wiki/PH

The Phil Hendrie show recently had an episode where Steve Bozell mentioned urinating in a pool and spoke about the Urine-Indicator dye

Audio archive of PHS with Steve speaking about the urine indicator 37 min