diseases. As with ivermectin, selamectin must be used with caution in collies and herder breeds with the possibility for homozygous MDR1 mutations. A single treatment with a topical formulation containing fipronil, (S)-methoprene, eprinomectin and praziquantel was shown to be efficient for the prevention of Otodectes cynotis infestation in cats. References External links Ear Mites FAQ from The Pet Health Library Parasitic acari Veterinary entomology Arthropod common names