There are natural wormers available. Some people do a mixture of cayenne and raw pumpkin seeds. I add cayenne to my feed all winter, and the table scraps around here are pretty spicy all year round.

In the fall, I cut a lot of pumpkins I've grown for the chickens in half, they devour them. I use these as preventatives, though. For a suspected infestation, where you don't want to go the chemical route, there are wormers specifically for poultry using effective concentrations of herbs. At least on that front, that's what I've heard from others - I haven't had a worm issue yet to test them on. The name of the more popular one eludes me, though.
Lalaland - do you know what I'm referring to? and have you ever used it? Vet-something.
I have no problem using conventional medicine for the family or pets or livestock when necessary, but I do try the natural route first in most instances. Using common sense, of course.
Raising the guineas with chickens from keet/chick does seem to have an effect on the homing instinct of the guineas. Other people I've known said their guineas would just wander off and never come back. If you get some, you will either love or hate them. No one feels "meh" about guineas!! But they are good eating, so if you can't stand the noise it's not a total loss! Rhetts, I've ordered mine from Cackle Hatchery before. Sometimes people on craigslist sell keets. They are not as awful as turkey poults in just trying really hard to die on you, but their mortality rate is higher than that of chicks. If you could get fertile eggs, it might be cheaper than ordering the minimum number of day-old keets from any given hatchery.
Good luck on hatching out your guineas this year, Ralphie. My husband really wants me to hatch some more out, for tick control and eating, but I think I need separate housing for them or there will be no peace in the winter coop and a lot of guinea for dinner. My daughter suspects I have another male in the flock. I am eager to see if she's right and the eggs are fertile. Do you check yours for a bullseye, too, or just incubate them and wait & see??