What is the pac/pod casing made out of?
The pac (or pod) casing isn't plastic! It is a biodegradable, water soluble film made of polyvinyl alcohol. When the film dissolves in your washer and enters the water stream in microparticles, micro-organisms that commonly exist in nature break down the PVA (polyvinyl alcohol) to water and carbon dioxide. As many as 55 species of micro-organisms (including bacteria, yeasts and fungi) that are naturally present in water and soils are capable of breaking down PVA. Research has shown that in river water, PVAs take no more than 1 month to break down into their component parts.