Save money and save water by detecting silent leaks that can waste thousands of galleons of water with our brilliant blue dye tablets. The tablets come in moisture resistant packaging and are used to identify leaks in your toilet that can waste water and money. To use, simply drop a tablet in the tank. If a blue color appears in the bowl, there is a leak and repairs should be made. Our tablets are non-toxic and FD&C safe. This 2,000 bulk case is great for plumbers, utility companies and municipalities, large office parks, hospitals, apartments, condos, managers, and anyone interested in bulk water conservation. Fast acting, strong blue color makes leaks easy to detect. Brilliant Blue Dye Leak Detection Tablets are a highly potent dye tablet for use in tracing water leaks, following water lines, examining water currents, etc.