Advantage II kills adult fleas quickly within 12 hours, inhibits the development of immature flea life stages and prevents them from reaching the biting adult stage. (medi-vet.com)
Some products contain additional ingredients called insect growth regulators that target other flea life stages to increase efficacy. (savinggracenc.org)
Something that targets several different flea lives stages, and for a sustained period of time, is more likely to achieve success. (thearkvet.com)