"Cats seem to be deficient in one of the primary mechanisms for metabolizing permethrin," she says, which is why they are more susceptible to the chemical. If an animal "isn't able to normally ...

Here's what you need to know: Permethrin is a synthetic chemical that mimics a compound found in the chrysanthemum flower. It is one of several such chemicals—known collectively as pyrethroids ...

think they can fight the scourge of tick-borne diseases by encouraging people to douse their clothes in a chemical called permethrin. In a new study, published today (May 24) in the Journal of ...

This assertion indicates permethrin resistance may occur among tick populations in real-world settings already seen among mosquito populations. Growing pesticide resistance often leads to an increase ...