Liquid BioOne from One Biotechnology is a 100 percent natural drainline, septic and grease trap maintainer. Applied on a regular basis after a drain or septic treatment, it can help to maintain free-flowing drains, eliminate odors and reduce the number of backups between scheduled pumpings, according to the maker. It doesn’t contain enzymes or caustic agents and is safe for people, pets and pipes, displaying the U.S. Environmental Protection Agency’s Safer Choice logo. 800-951-4246; www.onebiotechnology.com.