Hartz UltraGuard topical liquid products for cats all contain the active ingredient etofenprox. Etofenprox is classified as a synthetic non-ester pyrethroid that is effective against fleas and ticks.

Scientists mapped deer tick, dog tick and lone star tick abundance in Illinois and reported on tick-borne diseases across the state from 2018-2022. CHAMPAIGN, Ill. — Scientists analyzed the ...

The later ticks are in their life cycle, the larger the animal they choose for their main course. Producers who work with ...