No, ENA^TM is an additive that is added to conventional plastics that makes the conventional plastic biodegrade in both compost facilities and in landfills.

No. Oxodegradable additives require extensive pretreatment by either heat (60C / 140F,) or ultraviolet light to cause plastic to biodegrade, so oxodegradable additives rarely cause plastics to biodegrade, in actual practice. ENA^TM requires absolutely no pretreatment to cause conventional plastics to biodegrade.

Every kind of conventional plastic can be treated with the appropriate ENA^TM version, including polyethylene (PE, used to make bags, typically,) polypropylene (PP, used to make plastic buckets and similar items,) and polystyrene (PS, clear, hard, brittle plastic used in disposable cups,) as well as polyethylene terephthalate, (PET, used to make bottles for water, soda, cooking oil, etc.)

No, they are all PE, of different densities. ENA^TM makes all three biodegradable.

Depending on the kind of plastic being treated, the plastic will have between 1% and 1.67% ENA^TM active ingredients. This does not count the added plastic used to dispense the additive in pellet form.