The comparative efficacy of afoxolaner, spinosad, milbemycin, spinosad plus milbemycin, and nitenpyram for the treatment of canine cutaneous myiasis.

Spinosad/milbemycin or nitenpyram seem to be effective drugs for the treatment of canine screw-worm myiasis. Afoxolaner and milbemycin are effective but exhibited slower larvicidal activity. Synergism between spinosad and milbemycin was observed.