Hope this is in the right area mods, if not sorry. I read about this and heard there is no withdrawal period so we can still eat the eggs. Is anyone familiar with this stuff. I know you have to have a mixing license to buy one type of it but the 1% anyone can buy. I just don't know how to administer and if what I heard is true. I don't have a worm problem but my hens are on the skinner side and I want to make sure. I also don't know where to buy it.