PetIQ PetLock MAX for Dogs PetLock MAX for Dogs, from PetIQ, is a monthly flea and tick topical application that protects against fleas, ticks and mosquitos, plus prevents development of flea eggs and larvae. (petbusiness.com)
It controls fleas by preventing the development of flea eggs (it does not kill adult fleas, however). (universityanimalhospital.com)
High temperatures and humidity aid in the development of flea eggs and larvae. (petsprinciple.com)