I visited the local Tsc in Williamston, Michigan yesterday, and they have Purina medicated chick starter available. It's true that everyone doesn't need to feed amprolium to their chicks, but some do need it to prevent sickness and chick deaths. My farm (high, dry, sandy) has been fine...
Some folks have serious coccidia issues on their property, and really need the amprolium medicated chick starter. I'd tell TSC that you will take your business elsewhere, and do it. That's stupid of them to DQ that feed! Call corporate HQ and complain too. Mary