Hi I am new to this site. Need some help treating my birds. I am assuming they have mites. No sign of lice. Was thinking to treat with ivomec orally in their water as I have 250+ birds. Just don't want a long withdrawal period for eggs. Safeguard doesn't do external parasites right? Any other suggestions? Thought about Eprinex but can't find the injectable kind only pour on which isn't for use in drinking water either right?