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 ...

And it lasts about 7-14 days, but if the pet gets wet, it’s immediately washed off. There are flea collars available. There are some basic flea collars that can be purchased over the counter ...