Beaphar Anti-Parasite Spot On for large birds is a veterinary medicine containing Ivermectin (150ug per pipette), which is effective against roundworms, feather lice, red (blood) mites, feather mites, air sac mites and mange mites (scaly face). the treatment of external parasites such as mites, lice, fleas, and ticks. This Spot-On is also effective against internal parasites such as roundworm.