Beaphar Anti-Parasite Spot-on for Medium Birds is suitable for parakeets, rosellas, quails, mynahs, and other medium sized birds. Anti-Parasite Spot-on contains ivermectin and 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 is suitable for birds weighing between 50-300g.