Close enough for this situation. I had heard 1 - 3 drops, though, depending on the size of the chook, are you using the cattle pour-on? Maybe I just ended up with a different source, but it did do the trick for the mites on my chickies. I did a few practice runs to make sure I could control the number of drops very precisely, since overdosing will kill, and found that every few times, too much would squirt out. I had the least amount of control with a oral medicine syringe, you mean the kind with the little plunger in it, right? It would all be going well, and then ssqqquuuiiiirrrttt! I don't know if my droppers just sucked, but it worried me, and in the end I just made sure I only had as much ivermectin as I wanted to use on the specific bird in the dropper each time. A needled syringe would probably give you the most control, I think I will find one by next time. Just make sure it doesn't get sucked up by the feathers or all is for naught.