Urine-Off Urine Finder Light
"The Urine-Off Urine Finder Light is custom-engineered to locate those hidden, dried uric salt crystals- invisible to the naked eye. The crystalline structure of dried urine causes it to fluoresce a dull yellow color under ultraviolet (UV or ""black"") light. After locating the dried urine, apply a cleaning solution as needed. Fixture measures 6 5/8? long. Requires (3) AAA batteries ? not included"