Frontline Topspot Error. For a Month or More. Nothing works like it.
Nothing lasts like it.
Nothing is easier. C ontains fipronil, a revolutionary new molecule now used in 45 countries on over 8 million pets. In just 24 hours after application, Frontline spreads over your entire pet through the oils on its skin, by a process called translocation. Kills fleas on dogs for up to 3 months and on cats for at least 1 month. Return to homepage Columbia Animal Hospital Hawthorne Professional Park 10788 Hickory Ridge Rd.