Another way to test the flapper is with food coloring. Put four or five drops of blue or green food coloring in the toilet tank and then swirl the water a bit using any object that won't be harmed by the dye or water, such as an old toothbrush you're about to replace. If necessar...
Toilet flappers need to be replaced as the toilet gets older, typically every three to five years. If the tank and flapper are cleaned with harsh cleaning chemicals, you may need to replace the flapper more regularly. Grant Webster Replace the Flush Valve ...
Fix a running toilet within minutes with our complete guide When water leaks from the toilet tank into the bowl, it's usually a sign of an old or damaged flapper, which is the large rubber seal at the bottom of your toilet tank. Because...