Regulation (EU) 2019/1009 on Fertilising Products (FPR) foresees a Component Material Category (CMC) for Animal By-Products, and Article 46 of the same regulation specifies the minimum list of materials to be reviewed. Article 42(1) of the FPR outlines the criteria that should guide the Commission in this (and other) tasks: potential for significant intra-EU trade, absence of risk to human, animal or plant health, to safety or to the environment and “agronomic efficiency. This paper provides input on these points from the European Biostimulants Industry Council (EBIC) and the European Consortium of the Organic-Based Fertilizer Industry (ECOFI), two of the sectors directly concerned; many plant biostimulants and organic -based fertilizers and soil improvers contain materials derived from animal by-products.