Valbazen dosage is 1/2 ml given orally, and repeated in 10 days. If you worm with SafeGuard Liquid Goat Wormer or horse paste, give 1/4 ml per pound or 1.25 ml for a 5 pound chicken orally, and again in 10 days to treat roundworms. Use Safeguard for 5 straight days to treat most all worms, including capillary. @azygous is very good with crop problems. The best time to feel of a crop is early morning, when it should feel empty and flat.