The dosage used for Eprinex Pour On is 1/2 cc for a standard size chicken and 1/4 cc for a banty or chick. Whether it's worms or advanced cocci, can't say, but I'd bet on the worms for birds that age. Now, Safeguard/Panacur/Fenbendazole has anti-protozoan properties so it may actually help if the issue is cocci, too, in addition to killing the worms.