Rekhaoil® Leak Detection Tablets , 1 tablet to 605 gallons of water . Save money and save water by detecting silent leaks that can waste thousands of gallons of water with Rekhaoil® Florescent Dye Tablets . The tablets comes in container of 200. Identify leaks in your toilet that can waste water and money. To use, simply drop a tablet in the tank.. great for plumbers, utility companies and municipalities, large office parks, hospitals, apartments, condos, managers, and anyone interested in bulk water conservation. Fast acting, strong color makes leaks easy to detect. Rekhaoil® Leak Detection Tablets are a highly potent dye tablet for use in tracing water leaks, following water lines, examining water currents, etc.