Common household hazardous substances include cleansers, drain cleaners, automotive products, paints, solvents, and pesticides. This handbook was designed to serve as a resource for people frequently contacted by the public for information on household hazardous substances and wastes. Included in the handbook are: (1) an introduction to Michigan's household hazardous waste problem; (2) recommendations on purchase, use, and disposal practices for household products containing hazardous ingredients; (3) suggested less-toxic or non-toxic alternatives; (4) a directory of agencies, organizations and recycling, treatment and disposal firms; and (5) a bibliography of sources of additional information. Brief discussions of some issues associated with household hazardous waste are included to heighten awareness among waste management, public health and community service professionals, and to initiate furthur education of the general public. (TW)