To keep mildew from growing on your shower curtain.
The next time you get a new shower curtain, cut 2″ or so of the material off the bottom. This is where the curtain sticks to the tub and where the mildew grows.
The next time you get a new shower curtain, cut 2″ or so of the material off the top. This is where the curtain sticks to the tub and where the mildew grows.