Check Toilet Leak Food Coloring - Web to test for a leak, simply open the lid on the toilet tank and add a few drops of food coloring. If you have a heavy leak in your toilet, it's easy to diagnose—the faint sound of the toilet tank.
Web to test for a leak, simply open the lid on the toilet tank and add a few drops of food coloring. If you have a heavy leak in your toilet, it's easy to diagnose—the faint sound of the toilet tank.