Better Homes reports that Thymol, a natural ingredient made from the Thyme plant, is the latest natural cleaner approved by the EPA. This herb-derived ingredient disinfects household surfaces without the harsh smell of bleach. Thymol comes from the oil of various herbs, including basil and thyme, a naturally anti-microbial botanical. Because this plant-based component breaks down quickly, it’s less harmful to the environment than other chemical cleaners. Plus, the botanical oil kills germs and bacteria without strong chemicals or the harsh smell of bleach.