BPI® is short for Biodegradable Products Institute. BPI® is a non-profit association that is the largest certification program for compostable products and packaging in North America established to provide testing, education and promotion of compostable products. BPI® ensures that any product that carries its logo(see reverse side of this postcard for logo) meets the standard and specifications required to be compostable. Their goal is to promote best practices for the diversion and recovery of compostable materials through municipal and commercial composting.
You are allowed to line your bucket with a bag, however: