OPEN BOX ITEM SENTRY CLEANUP SPOT URINE REVEALER DOG AND CAT PEE DETECTOR. BLACKLIGHT REVEALS URINE STAINS ON CARPET AND HARD TO SEE AREAS. AMAZING PRODUCT CAN SHOW OLD STAINS OR AREAS THAT CANT BE SEEN WITH THE NAKED EYE. EVER SMELL DOGGIE URINE BUT COULD NEVER FIND THE SPOT? THIS IS THE SOLUTION! WORKS EVERY TIME! EASY TO USE. JUST SWITCH ON AND TURN OFF THE LIGHTS. SCAN THE BLACKLIGHT BACK AND FORTH OVER THE AREA. BATTERY OPERATED ALSO HAS A FLASHLIGHT. SIZE APPROX 13”