If you are looking for a natural solution, you need Mad About Organics Flea and Tick Repellent Shampoo is formulated for cats and small animals. Mad About Organics Flea and Tick Repellent Shampoo is pH-balanced and can be used as often as needed. Mad About Organics products never contain pyrethrins, permethrins, or other harsh ingredients. Mad About Organics Flea and Tick Repellent Shampoo is one of the most gentle for use on cats and small animals 4 weeks or older, including pregnant females. Great for regular maintenance or once daily for severe conditions. We also recommend after the bath to use Mad About Organics Insect Repellent Herbal Spray to help camouflage their scent from the insects.