How to Get oil out of carpet is one of those household questions that tends to arrive without an appointment. One minute the carpet is behaving itself, the next it is wearing a fresh mark, smell, dent, or mystery patch like an unwanted badge. The good news is that most carpet problems can be improved (see our carpet blog), and many can be solved completely, with a calm approach, the right tools, and a little patience. Stains behave differently depending on what caused them, how long they have been there,...