When we ship from Fontana HQ, we use packing peanuts. The peanuts that we use are both made and purchased locally in our town. They are Biodegradable Packing Peanuts and are made from industrial-grade corn and potato starch produced in the USA. You can go ahead and test them out yourself by placing a few in your sink under some running water! Sustainability and protecting the environment are very important to us.