Wondercide Flea & Tick Control spray offers treatment and prevention in one safe, effective spray. A Pack leader’s best friend. This natural flea and tick treatment for dogs, cats and home is proven to kill, repel, and prevent 98-100% of fleas, ticks, and mosquitoes without harmful chemicals, protecting your loved ones smartly and safely. Just like you. Because that’s what Fierce Love is: keeping your Pack safe. No matter what. KILLS & REPELS.