Hortidaily mentions that the Growcoon has held the 'OK Compost Industrial' certificate for many years. This applies to both the more stable REGULAR type and the rapidly decomposing PROGRESSIVE type. The difference between 'Industrial' and 'Home' certification standards is the composting environment. The 'Home' certification is oriented to the rather inconsistent degradation factors in garden compost piles, such as moisture and process temperatures. The decomposition process is, therefore, usually slower and more difficult compared to industrial composting plants.