I am almost afraid to say this and jinx myself. I have never wormed chickens, and never seen any evidence of worms.
We raise cattle, and once in a while you will get one that tends to go lousy. My husband does not keep them. Personally if I saw worms or my hens became unthrifty, I would use a real wormer. I do think that space, weather, overall condition of the birds can have an influence on whether or not your birds get parasites.
If they do, you are feeding the parasites.
I live in the north, maybe that helps. Anyway, I am on the side, if you don't see anything, don't worm, but if you worm, read the directions and follow them, using real medicine.
Mrs K
We raise cattle, and once in a while you will get one that tends to go lousy. My husband does not keep them. Personally if I saw worms or my hens became unthrifty, I would use a real wormer. I do think that space, weather, overall condition of the birds can have an influence on whether or not your birds get parasites.
If they do, you are feeding the parasites.
I live in the north, maybe that helps. Anyway, I am on the side, if you don't see anything, don't worm, but if you worm, read the directions and follow them, using real medicine.
Mrs K