My hens sound a bit congested. They sneeze and cough, and there chests rattle a bit. I purchased Duramycin-10 to treat them. But after carefully reading the back information it says "Not for use in turkeys or chickens producing eggs for human consumption" Well we eat their eggs. Does this mean I cannot administer this medication to them? Or is there a time period as to where I need to disregard the eggs collected after administering this medication??