round.
to make life easy, order that molly's herbal wormer .
http://www.fiascofarm.com/herbs/mollysherbals.php/categories/herbal-wormer
easy as pie, you just mix the herbs with the feed for three days. and then you can give them a weekly maintenance dose of a different herb blend. I'm kind of lax about that, because I forget. Thanks for reminding me now!
or you can go with a chemical wormer, but you will have egg withdrawa (feed eggs back to flock ) for about 21 days or something because you have to do two doses. Need to worm everyone!
molly's, you don't have any withdrawal time, and it does work. so easy. havent' done fecal float tests afterwards, but know of people who did to double check its effectiveness.
Someone else can tell you which wormers do roundworm, etc.