Don't know Clinton, but another hazard is the local coffee grinding machine in the grocery store, in which some airhead has previously deposited their insipid flavoured beans. Best to run a few sacrificial beans through and dicard them, before processessing your own. A contaminated machine can ruin a whole pound of "coffee flavoured coffee", not just one cup.

We always grind our own now and the only snag we have run into is during power outages when our only functional grinder is out of commission. You just can't quite get the proper fine grind needed for an exquisite cup, with a framing hammer and a ziplock. Guess I should try to get the old PeDe hand grinder mounted and working again lest we be caught again.