I've been treating my flock with the solution for 7 days now & I noticed the package says not to give to chickens that are laying eggs for human consumption. Most of my flock is 16 weeks old and three of them are 14 weeks..all not laying yet. Can the eggs be eaten when they do start to lay? How long does the medicine stay in a chickens system? This concerns me since I decided to start a flock for eggs and pets.