@RHV I posted something about worming colts using broadleaf plantain that should be fully safe & work equally as well for goats. Chances are, being that goats are a bit smaller than these guys were at the time, you should be able to feed less, but for the same length of time.
Here is the link: my post is the 7th. Ah...it looks like what you need pops up in the preview, so no need to scoot over there, I guess.
We did this daily for 2 weeks. These colts were very wormy. You know when they are done when they don't prefer it over anything else and there is no more evidence of worms in their poop...although with goats, they may just keep eating it. Haha
Vet Doc Jones should have something about this on his forum, homegrownherbalist.net. It is a very slow forum, but he gives good advice.