I need to treat my flock for roundworms, and I bought Safeguard for Goats suspension liquid. All I have read is to add it to their water. I don't like this method since I don't know how much each one will drink. Seems haphazard. I am going to weigh each chicken. Is there a dosage amount per chicken's weight that I can drop just inside their beak? Maybe I should buy Panacur paste and give each one a pea-sized dose (Gail Damerow's directions in "The Chicken Health Handbook")? That also seems haphazard since it doesn't specify weight. I have Large Fowl and Bantam-sized chickens. Thank you for your advice!