Sodium chlorate has a soil sterilant effect. As a strong sterilant, glutaraldehyde is toxic and a strong irritant. The biggest advantage of hydrogen peroxide as a sterilant is the short cycle time. It is a sterilant, killing endospores in addition to many microorganisms and viruses. It is mainly used as an antioxidant or chemical sterilant. ContraPest is a contraceptive, not a sterilant, so a continuous supply maintains reduced populations. ETO is the only low-temperature sterilant to stop outbreaks on these instruments.