My 3 little silkie hens had mites under all their fluffy feathers and it took me a while to figure out that was what was going on. The vet gave them a series of 3 Ivermectin injections over 6 weeks to kill any mite eggs that might also be on them. They're great now and are back to eating everything in the vegetable garden. They're not big layers and we get all excited for fresh eggs when they do. We got an egg today, but I'm concerned about eating the eggs when they've still got Ivermectin in their systems. How long do you think we should wait before they're safe to eat?