Question for goaties

My grandmother was a goat farmer and I remember her giving the goats a plug of tobacco to "prevent worms". My question is kinda two fold, is what she did good, bad or didn't matter either way? Secondly, what homemade treatment is there for goats to treat worms?

I have seen a couple of older studies on tobacco, and they either show that it doesn't work or that it doesn't work very well.

And I want to add that there we know there are some very negative effects of tobacco on all mammals. It's a long story but I happened to wind up with a couple of goats here that had eaten cigarette butts regularly when they were living in the city, and they gave birth to the tiniest kids that I had seen in years, and one of them gave birth to two dead kids and two live, although one of the live kids never gained weight and died within 4-5 days, even though we were bottle-feeding him, so we knew he was getting enough milk. I actually found a study on animals eating cigarette butts, and they have a lot of nicotine in them, which has the same negative effects on goats and goat fetuses as it does on humans and our babies.

Copper oxide has been shown to kill barber pole worm in more than a dozen studies, and it's safe to use in sheep, which are much more sensitive to copper toxicity than goats.

I have fed my homegrown wormwood to goats with a heavy wormload, and it reduces the number of worms, depending upon how much the goat eats. It doesn't kill as many as commercial dewormers though, so it may or may not actually make the goat feel better. I've had mixed results, in other words.