After you do the steel wool bit to get the silver out, combine the developer stop and fix. They nuetralize each other out and you get chemical salts. It is also the best lawn fertilizer you can get. At this point it doesn't hurt a thing to dump it on your lawn or down the drain.
What i find most amusing is having lived in Park City Utah, the drinking water right out of the tap has more silver in it than what I get out of my fix.