FP Degradable Bin Liner 30L - White, 550mm x 615mm x 11mu (2000) Per BoxDegradable bin liners are produced from post consumer plastic, but contain additives (catalysts). After an appropriate time delay (we specify 18 months), these speed up the degradation process. This allows the plastic to react with oxygen, which accelerates the break down of bags into smaller particles eliminating the physical eye sore and reducing the physical structure.