We make Better for All cups with a bio-based material called PHBH. PHBH is a form of PHA, a second generation plant based polymer that is non-toxic and certified to fully and safely decompose in various environments including water and low or no oxygen settings like landfill and anaerobic composters.
Our product lead tests cups in different ambient conditions at different times of the year on an ongoing basis, and records the results.
The progressive photo documentation above depicts the decomposition of a Better for All 16 oz cup immersed in tap water in a glass container with a scoop of soil (approx 1″ of soil once it sifted to the bottom of the container).