feel free to research this further. it is hard to overdose ivomec if you do it within reason. my instructions came from here, but not from dawg. according to the thread the guy was a vet, he said if your in doubt about the dosage its ok to give just a little more.I know a while back on BYC I read some about Ivermectin and Dawg is the Wormer guru on BYC and was telling someone how much of the Ivermectin to use so it would not harm your chickens. You might look for his advice on it. He does alot of reseach on stuff he uses on his chickens! Alot of ppl refer ppl to him!
the biggest problem i have heard from this treatment was people using it near the oil gland (by the tail) and the chickens getting ill because they ingested it wet. when i use it, i put it on the back of the neck - in between the wing blades but toward the top area. make sure you separate the feathers and get it on raw skin or it wont work.
give me a little bit and ill see if i can find the actual thread.