Aristopet Flea Powder for Dogs and Puppies. It controls Fleas, Lice and Adult Brown Dog Ticks. The powder contains natural ingredients like soothing tea tree oil which work as a flea deterrent and has antibacterial and antifungal properties. Natural pyrethrins also act as natural flea prevention. Simple application involves dusting your pet with powder and then brushing it off. It can also be applied to the environment.