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.

Whether you’ve experienced an infestation before or not, every cat owner understands how difficult it is to get rid of ticks and fleas. While outdoor cats are more prone to getting fleas or ticks, ...

Fleas and ticks are active year-round, even in winter months. Despite vet recommendations, dogs get an average of only 6 months of prevention per year. Cats receive even less, with an average of just ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. (WJW) – The Ohio Department of Agriculture ...