I'm going to get some Odoban the next time I'm over at Home Depot to use multiple ways. I think it should be used on the incubators after every hatch and especially the ones that are used for hatchers.I haven't candled them since Day 7, and then lost 2 of 5 of those, but also tossed 2 of 5 of the regular eggs that are with them. So all it's proving at this time is perhaps I have a rooster or two that's shooting blanks.
I really believe if the Odoban was going to affect them, it would have killed them off right away. But, it'll definitely prove it when they hatch.