Reviving Old Paintbrushes

I know, we have all done it!  Taken all the time to paint something and then you are too tired to clean the brushes properly so when you pull them out again they are hard as rocks.  Well this solution did not do anything for my poor paintbrushes.  I guess the best solution is to just clean them right the first time.

RESULTS
PINS DOWN
**-ease
*-effectiveness
**-cost
**-time
*-practical