7 dust will only work on external parasites. (i know this will start an argument) DE is worthless for chicken parasites, i have recently done alot of research on it. they only way it will kill lice and mites is if you literally smother them with it, as far as worms you would have to feed so much to the chicken that it would kill it by either dehydration or internal bleeding. however small amounts of DE in the water will help with feed to weight gain ratios, and may strengthen bones in cornish rocks.
you can try tobacco, make sure its dry. break up a cigarette onto a piece of paper. when the tobacco crumbles easily, crumble it into small (pepper sized) pieces. sprinkle small amounts onto the feed. use as small amounts as you think is sufficient, chickens can overdose on nicotine pretty easily. egg withdraw is one week
unfortunately no matter what you use to treat for worms- if it is effective its a poison. you will have to throw them out for a period of time.
someone else may have better advice on this, but if they arent looking sickly or expelling worms i wouldnt treat. some worms are good for chicken health, just like some bacteria are good for us. most chickens will have a few worms, sometimes its more risky to use a poison to get rid of them than it is to leave them.
I understand about the controversy on certain topics. We all know! So no arguing please!


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