Efficacy of a single-dose topical formulation combining Fipronil, Moxidectin and Praziquantel against natural infestations of Notoedres cati, Otodectes cynotis and Felicola subrostratus in cats

Abstract Lice and mange represent common ectoparasitic infestations in domestic cats, affecting their health and well-being. The study evaluated the efficacy of a topical formulation containing 12.5% fipronil + 0.83% moxidectin + 8.3% praziquantel against common feline ectoparasites Otodectes cynotis, Notoedres cati and Felicola subrostratus. For the ear mite study, a controlled trial was conducted on cats naturally infested with O. cynotis. For the other two parasites, field studies were conducted on naturally infested cats. Cats in the treated group received a single topical dose of formulation. Parasite counts were performed at various time points post-treatment to assess efficacy. The results demonstrated the formulation was highly effective against all three parasites, achieving 100% efficacy after 3 days of treatment. The product was well-tolerated and safe, making it a suitable option for the treatment of feline ectoparasitosis.