When the only other options on the market at the moment is an isoxazoline product and being very wary of the neurologic side effects of those products I was looking for something which would help protect my animals from fleas brought onto our farmlet by wild animals and also protecting against Ehrlichiosis and other ticks from the neighbouring cattle and sheep. I was very grateful to find the Seresto collars and read scientific reviews and studies about it protecting animals from everything I'm trying to avoid as well as paralysis tick. Haven't seen a flea or tick on my animals since I put them on which is great. Thank you to the manufacturer for having an alternative on the market.