What Exactly is “Zero Waste”at the Debra’s Refillery? …and is it Really, Literally “ZERO”? Let’s start with the simple answer: NO. Not even when you roll up to the Refillery on your fixed gear bike, and ride away with Maine-grown pesticide-free oats in your grandpa’s hemp fiber saddlebags. There’s still waste in the system. The farmers probably use a tractor.