leak.
A toilet that keeps running may have a worn flapper, a faulty flush valve, an incorrectly adjusted float, a fill valve problem, or another mechanical issue.
These parts control how water enters the tank and how the tank empties into the bowl. A ball of foil cannot restore a damaged seal or correct a faulty valve.
In some circumstances, an object placed in the tank could interfere with moving parts or prevent a seal from closing properly.
That could create the very problem the hack supposedly prevents.
