How to Seal Sliding Barn Doors

Rather than replace the door, we should just try and seal it first.  

Here's a good article about how to do that:

http://www.hobbyfarms.com/how-to-seal-sliding-barn-doors-3/

And a supplier of the brushes:

http://www.brushweatherseal.com/barn-door-seal

Update from August 28:
Never mind - we will just order and install an overhead door for $900.  It will look better and definitely keep the mice out.