My house cleaner is upset because I asked her to not use a feather duster (same one used to dust furniture) to brush crumbs out of the toaster oven. She brushes crumbs onto the floor.

Am I expecting too much, are my standards too high, am I being too critical, should I turn a blind eye to the way things are done? Am I being too picky?

I shudder at the thought of household germs being introduced inside the toaster oven where food will be. Using a dry rag (used elsewhere) to wipe out toaster oven after using the feather duster does not calm my fears about germs.

Your opinions please.