can you 'recondition' an old A/C drier?

What I understand, the answer is No. They have a bag that holds the desiccant and after they get so much moisture the bag falls apart (rots) and the desiccant goes through the system and plugs the filter, gets in the evap and condenser. I had one the guy fixed himself and left the system open for sometime and after I charged it it quite working, the desiccant was all through the system.