What do you do with all that leftover glycerin?

[Kwikkordead]

Let it get real dry and run it through a mulcher to break it up and offer it to sell (or give) to all the local garages.

[B1powered]

I made mine in small batches using a 15gal translucent drum. The VW rabbit I was feeding it to didn't use much Bio-d so there wasn't alot of the Glycerin.
I used my soap to do clean up and washed the rest down the drain into public sewer. Being non-toxic and biodegradeable I wasn't worried about it. I can't see how it would hurt anything in a septic system either, heck it might even help it out!