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.

However, only a handful in the US bite and transmit diseases to humans. The most common ones are blacklegged ticks (also known as deer ticks, but they feed on lots of animals besides deer), lone star ...

WASHINGTON (AP) — Ticks can be active in any season and it’s important to check for and remove the bloodsuckers as quickly as possible — especially after you’ve been outside hiking, gardening or ...

GREEN BAY, Wis. (WBAY) - Watch out for deer ticks. They’re out in full force. State health officials say there’s been a rise in people getting sick after a deer tick bite. June and July are the months ...

FILE - This undated photo provided by the U.S. Centers for Disease Control and Prevention (CDC) shows a blacklegged tick, also known as a deer tick, a carrier of Lyme disease. (CDC via AP, File) ...