These maggots are eating household leftovers, and their excrement can be used as compost to grow more food.
The Magobox is a kit you can buy for approx $27. Magobox comes in a variety of configurations, and the devices can be stacked to allow for larger amounts of food waste. The product brochure claims that the Magobox is 3x faster than traditional composting and produces 2x less methane gas. All that’s needed are black soldier fly maggot eggs, which can be purchased separately. The Magobox currently only ships to Indonesia and Malaysia.
Magobox was invented in Indonesia by Fathimah Himmatina in 2020. She told Reuters that people initially thought it was gross, but the idea is starting to catch on.
Maggots are also rich in protein and can be used as livestock feed once their deed of munching on food waste is done.