I am doing this to keep all the breeds separate, and to keep the lines straight. Otherwise I would need to set up 9 different brooders, run 9 different heat sources, and 9 different grow out pens. I already have 15 breeding pens. I sell some of these I need to be able to tell Toads from White Legbars at 2-5 days of age. I needto tell Cuckoo Maranm, Dominique and barred rock chicks apart with 100% certainty. So I have to take the risk. It was a hard thing to decide to do, I only did it after talking to a lot of breeders and seeing their results. None of them mentioned infection by anything as a problem. I have tried fingernail polish, bands and none of them work well.