I think my chickens have worms. I have several hens that seem to be gasping for breath and breathing with their beak open. They seem lethargic. I went to the feed store to get some kind of worm medication, and they gave me a bottle of pills. No way can I get a pill into every chicken. Is there a better way to worm chickens? I'm not sure what type of worms they have. Any suggestions would be much appreciated.