We use Ivermectin (for cattle/swine-get at TSC) liquid to worm our chickens. A couple drops on the skin at the back of the neck will take care of all kinds of worms AND scaly leg mites, and lice/ticks. Repeat in 3 weeks. We went to a poultry seminar at MSU and this is what they recommended for parasites. This seems to be much simpler than greasing up the legs every day or so. A bottle of Ivermectin lasts a long time.