I picked up five new babies from the feed store, four bantams, one standard. They are from one day to about a week old. They appear to have foamy poo, and the one that appears to be a seabright is acting slightly lethargic. I think I need to worm them, but I am not sure if I can at this age...I have wazine, but no other wormers on hand. Can I worm them?