The Clack County Composter Recycler program is offering a free Green Cleaning workshop from 6:30 to 8 p.m. May 8 at the 78th Street Heritage Farm, 1919 N.E. 78th St. in the Hazel Dell area of Vancouver. Students will learn how to make three versatile household green cleaners. Participants are eligible for a free green cleaning kit. Register at clarkcountycomposts.org/classes-and-workshops/current-offerings/855-green-cleaning-4.