Best for fleas: Seresto Flea and Tick Collar for Cats - See at Chewy The Seresto Flea and Tick Collar for Cats is a reliable, veterinarian-approved way to repel parasites for up to eight months.

The active ingredients of the flea collar are imidacloprid and flumethrin ... Flumethrin is a pyrethroid that has been shown to have troubling health impacts on dogs, cats and people. When combined, ...

Flea collars were once the go-to method for flea ... products containing essential oils because some can be toxic to cats. Other pets in your home: Any product labeled for use in only dogs should ...

WASHINGTON— Popular pet flea collars and treatments contain high levels of toxic ... A recent study found dogs and cats are highly exposed to PFAS and often exposed to concentrations well above the ...