I was going to treat my older hens that are 2 years old. I noticed some bloody droppings in their coop this morning. I was going to put the 1 tablespoon in a gallon of drinking water and use this as their only drinking source for 3 days. They are acting fine ( that I can see ). But the problem is that I have (2) 7 month old ducks living with them. Would I have to separate them from the chickens? I noticed on the SULMET bottle it says for chickens and turkeys. Would the ducks OD considering that they drink more. The bloody poop can very well be the ducks also, so I don't know. Any help would be appreciated.. Thanks!