Plastic (or polymer) consist of long chains of organic molecules called monomers. Polymers do not exist naturally and in most cases are designed to be incredibly stable - as a result do not readily biodegrade and will last in the environment for centuries and possibly forever. They are impervious to air and water.
Eco -One is an organic additive that leads to the biodegradation of the plastic through a series of chemical and biological processes when disposed in um microbes rich environment such as a landfill. It allows the plastic to be consumed (as a food and energy source) by the microbes.