The bottom bin- some worms still hang out down here, but it is definitely ready to dump in the garden, worms and all.
I was happy to see that this set up did OK in the winter on my deck, because it made it so much easier to feed them! I had to empty rain out a few times from that bottom lid and it is probably wetter than the worms would prefer. I thought they had all died, but now that the weather is a bit warmer the population had exploded and we are back in business. I think they just burrowed deeper to get away from the cold.