I enjoyed the Campbell Live report The 'eco-bottle' you can't recycle about Charlie's so called "Eco" bottle. I have long believed that this is a classic example of misleading greenwash.
There were a couple of factual mistakes in the report though.
Polylactic Acid (PLA) is the material that the body of a Charlie's bottle is made of, while the cap (which comprises of at least three pieces of plastic) is your standard Polyethylene Terephthalate (PET).
The PLA can be reprocessed in a commercial composting facility - requiring a standard temperature of 60 degrees for a sustained period of time to break down - but there are very few around. Envirofert is one of the only places in New Zealand where you can achieve this.
The bottle cap is recyclable, but the fact that it is a different material to the bottle itself makes re-processing these materials very difficult and less eco-friendly than companies that use these products would have you believe.