toilet keeps flushing
I'm passing this along from my sister -- she can't figure out why the 3rd floor toilet in her townhouse makes a 1/2 flushing noise long after it's been flushed. It happens at various times not related to flushing and sounds like a small amount of water is flushing -but not like a real flush. Her other 2 toilets don't do this - can you help? Thanks, Allison