Via select Alexa-enabled devices and for Prime members only, Amazon offers the Natural Care 14-oz. Flea and Tick Spray for Dogs and Cats for $1.09 with free shipping. (This link is provided for reference only. To order, say, "Alexa, order flea and tick spray.") That's at least $8 less than you'd pay at a local retail store. It's made in the USA and uses natural plant extracts to kill ticks and fleas.