No. Our products will not biodegrade on the shelf. Biodegradation will only be initiated in an environment with the presence of micro-organisms, humidity and heat. However, PlasticFri product can over time, like any other material, lose some of its mechanical properties. As long as they are stored in a cool, dark place, the products will retain their structural integrity for a reasonably long time as proper storage prevents the initiation of the biodegradation process. We have a shelf life of at least 12 months.