Causes: Worn out valves, seats and gaskets are common culprits. "Turning faucets on and off over the years wears these parts out," Hogan says. A faucet valve cartridge can also be to blame.

A tub and shower faucet comes with hot- and ... a parts list and exploded diagrams showing you how to access the faucet cartridge. I always take these instructions and place them in a clear ...

Leaving your tub faucet add-on assembled when not in use ... manufacturer's instructions for specific cleaning guidelines. If the filter cartridge has mold that can't be removed, don't try to ...