Wageningen Food & Biobased Research has studied how compostable plastics behave in the current Dutch system for the treatment of GFT (i.e. source separated municipal biowaste). A remarkable result was that the compostable products made of polylactic acid (PLA) disintegrated faster than for instance; orange peel or paper. They had completely disintegrated after one composting cycle of 11 days.
This was not only the case for tea bags, but also for the thicker plant pots. D-Grade®BIO belongs to this category, and therefore degrades faster than orange peel!
Original message from WUR: "Compostable plastics break down quickly enough in today's Dutch VFG waste processing"