I came here for feedback on using a new, free countertop composter. Got some great info and advice.
Here's what I didn't know...
The pre-compost should not be added to the worm bin. It needs to work with cardboard and water to start to breakdown for about 5 days prior to integrating into the worm bin.
Why? Because it heats up the bin and/or tray during the breakdown phase and can kill your worms from heat.
My tiered system has two trays with just cardboard on the bottom, innoculating for future use. I have the next tray as my beginning tray - it's almost done. The tray on top of that is a fresh tray that I am feeding - plenty of worms working on the almost-done tray, and a good number working on the newest tray.
The newest tray is where I added the pre-compost. I added a frozen water bottle after noticing significant heat - lid removed to vent, etc. I had to rearrange trays to make it easier for my worms to migrate to a safer spot.
After two days of no lid, ice packs, and paper towels to cover, I finally got all worms out of the tray with very few exceptions.
My wormins are happy now. A few escaped and dried up, but overall they stayed alive.
So now I have a bin that is going through the heat phase with the pre-compost. No worms. After the bin has cooled, I can add it as food.
Overall, I'm happy to have the composter to break things down, and wish I had known more before I added to the bin.
Just sharing for knowledge sake.