That's interesting. I've never seen food composting machines before, but the instructions of adding sawdust and microbes reminds me of a different type of composting machine-- composting toilets.

These toilets have a solid waste compartment where the user is expected to fill with sawdust (or coconut coir) and the mixture must be agitated after each use with the external hand crank. There's also a fan in there to cycle the air. Similar concept to food composting I suppose. I would love to learn more.