One Biotechnology’s BioOne biological drain and septic system maintainer helps keep drains flowing freely and reduces odors and costly backups between pumping, according to the maker. It does not contain added enzymes or caustic agents and does not emulsify FOG and move it down the line. It has met the U.S. Environmental Protection Agency Safer Choice challenge, which means that every ingredient in the product has been reviewed by EPA scientists. Only products meeting their Safer Choice Standard, which includes stringent human health and environmental criteria, are allowed to carry the label. 800/951-4246; www.1biotechnology.com.