Ok, I know this has been discussed to death probably but I was researching parasite control when I saw you could use ivomec. I was happy cause I keep some in fridge along with atibiotics and such for dogs and stuff. I had posted earlier about a hen I have that has not layed in months and her feathers around her vent area always seem to be wet, also runny stool in the run. I suspect parasites even though she looks healthy. I have the 1% injectable ivomec. Is it best to just give as an injection, .1ml , or put in the water for all my birds, 4ml per gallon of water?