Beaphar Demethicure Flea and Tick Killer Spray for Cats and Dogs 250 ml A care spray that protects against ticks and insects. Lasts for 8-10 days Dimethcare Beaphar Spray for dogs and cats over 12 months of age is an all-natural, biocide-free grooming spray. Spaying helps groom and maintain skin and coats. The combination of aloe vera and the nutrient dimethicone renders ticks, fleas, mosquitoes, lice and other insects unable to move, causing them to suffocate and die.