Parasites such as fleas, ticks, lice and flying insects are more than just a nuisance. The bites from these parasites can cause allergic reactions and dermatitis, lead to secondary bacterial infections and even transmit diseases.K9 Advantix®II kills fleas and ticks through contact, meaning they don’t have to bite to be affected by the active ingredients. K9 Advantix®II also kills mosquitoes and lice, as well as reduces mosquito bites and stable fly bites on dogs.