Ran across this today:
"Avani’s bags are made from cassava root starch and other natural resins, using no petroleum products. They biodegrade fully within 3 to 6 months, depending on soil conditions, converting naturally into carbon dioxide and biomass, with no toxic residue. This process can be hurried by dissolving in hot water (see video), softening in cold water, and burning to leave a small amount of ash.
The bags are safe for insects and animals to eat, both terrestrial and marine, and apparently they’re tasty, too, as seen in this video of crayfish and chickens fighting over the edible bags. When dissolved in hot water, Avani claims they're even safe for humans to drink."
Be pretty cool if suitable for powder so all these mylar bags don't end up in landfills. No one near me, not even close to me, recycles mylar so I have boxes and boxes of empty bags in my garage still.