How long does Frontline take to kill fleas on a dog? Frontline starts working once the product has spread over the whole body surface, which can take up to 24 hours after application. Thereafter, fleas are killed within 24 hours and ticks killed within 48 hours.
Is Frontline a good flea treatment for dogs? The best OTC topical flea preventive
Frontline Plus is our top nonprescription recommendation because it kills ticks and fleas, controls flea infestations, and kills chewing lice, all with one easy application. When used primarily for flea control, each dose of Frontline Plus lasts up to three months.
How long does frontline last on a dog? Frontline kills 98 to 100 per cent of existing adult fleas in less than 24 hours. It can remain effective against fleas for up to six weeks in cats and three months in dogs. However, monthly application is recommended to ensure that other parasites are controlled adequately.
Does Frontline get rid of fleas? The active ingredient in all Frontline flea medications is Fipronil, which and works by storing itself beneath the skin, in the sebaceous glands. Frontline is secreted along with the natural oils of the skin, continuously killing fleas as they come in contact with the skin or hair.