I just realized that my chickens and four ducks had lice last week. I dusted them with permethrin and cleaned the coop and then dusted that. I'm going to dust it again this weekend. How long should I wait before I rehome my pet ducks? PS I'm selling them cuz I'm getting Call ducklings this spring. I'm so excited! But my mallards would pick on them, so they need new homes. If anyone here is from MN and is interested, email me!