One of those controversial pro/con benefits I read years ago re DE, honey, apple cider vinegar, tomato leaves, and the lists go on.
For instance, tomato leaves are listed as toxic to humans/living things -- insects and hummingbirds avoid tomato plants like the plague (except tomato worms and spider mites seem to love the plants) -- but I can't keep my chickens away from our garden tomato plants even when we bird-netted the plants. It hasn't killed or sickened our birds eating the leaves they manage to reach so how iffy are the toxic vs safe lists chickens can eat? All depends on the info one wants to believe? Also, peanuts supposedly aren't a safe chicken food yet our Dominique hen seeks them out specifically if she gets into the wild bird seed mix. And she's 7 yrs old now -- not dead or sick.
I suppose I would depend keeping NutriDrench in supply as a picker-upper for any weak or ailing bird rather than guess at a home-remedy unless advised by my vet. We've been so spoiled having him for all our indoor parrots, budgies, cocktiels, & chicken needs for the last two decades.