Just wondering whether anyone is concerned... At the supermarket deli counter, they try to keep the slicer clean - but they wipe the slicer with a rag. Also, they use a knife to cut sandwiches after the knife has been standing in a tub of cloudy water with other knives. My solution is to say I don't want the first slice and to cut my sandwich with a plastic knife. Is anyone concerned about bacteria that accumulates on the rag and on the knife? Wonder whether they could wipe the slicer with paper towels and slice the sandwiches with plastic knives.