TevraPet Activate II Flea & Tick for Small Dogs vs K9 Advantix II Small Dog Flea & Tick Treatment

Both are monthly topicals for small dogs (4-10 lbs) built on the same core actives: imidacloprid, permethrin and pyriproxyfen. K9 Advantix II is the original brand formula, has far more owner reviews, and adds biting fly control; TevraPet Activate II is a generic version that covers fleas, ticks, lice and mosquitoes but not flies, and comes as 4 doses instead of 6. Pick K9 Advantix II for the longer track record and fly coverage; pick Activate II if you want a shorter supply to try or a smaller pack to start.

• Choose the TevraPet Activate II if you want a 4-dose supply to start or a generic version of the same actives without fly coverage.
• Choose the K9 Advantix II if you want the vet-recommended original brand, a 6-month supply, and protection against biting flies as well.