Sorry if this is posted in the wrong area. I would like to worm my flock with wormer that I can put in their water. It doesn't seem reasonable to put 6 drops of Ivermectin on every chicken one at a time and know which bird was dosed. ( Unless someone can enlighten me?) I have used Wazine, and that was easy. I would like to use a broad spectrum like ivermectin or safeguard next time. What broad spectrum wormer can be given in their water? Or feed?