- NO HARSH CHEMICALS – Unlike traditional flea Products, Our Flea & Tick Spray is gentle and safe. We use 100% all-natural actives to kill fleas and ticks rather than harsh chemicals. Made with 5 therapeutic essential oils, this spray smells great and soothes irritated skin while it works hard to rid your pet of fleas and ticks. It is an amazing mix of plant based goodness for your pet's fur and skin.