My tenants noticed a few weeks ago that a putrid smell come from the Samsung oven each time it was turned on. They found mouse droppings in the drawer below as well as behind the unit. Despite deep cleaning, the odor persists. In addition and hopefully unrelated, they noticed that their clothes are coming out of the dryer covered in what looks like animal hair. I'm wondering if these seem like fixable issues or would I be better off replacing the units?