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) for up to 4 weeks after treatment. This pack contains 2 pipettes, and is suitable for use on birds weighing 300-750g.