California’s innovative Safer Consumer Products regulations, also known as the Green Chemistry Initiative, are ready for another step forward with the proposed inclusion of Spray Polyurethane Foam (SPF) Systems containing Unreacted Methylene Diphenyl Diisocyanates (MDI) as a Priority Product. These SPF systems are used for insulation, roofing, or sealants and raise safety concerns because of their widespread use by both professional contractors and “do-it-yourself” users for home repairs. This is the second Priority Product proposed for listing, following the inclusion of children’s foam-padded sleeping products with fire retardants.