It's not a major vector. We don't always wear gloves either. The difference between feet and hands is that hands frequently touch mucous membranes, where feet

It's not a major vector. We don't always wear gloves either. The difference between feet and hands is that hands frequently touch mucous membranes, where feet don't. So if you can move a contaminating activity from the hands to the feet this easily reduces infections by an order of magnitude for that vector.