Good Housekeeping is known for putting their seal of approval on things, but did you know they also have advice on how to do good housekeeping? This handy guide answers the question everyone asks themselves for the first one to seventy years of living on their own: "Am I supposed to clean (object), and how often?" The answer to the first question is: yes, you have to clean everything, you slob. The second varies a lot, but now you stop relying on your nostrils and consult this guide to live like a civilized human being.

Sources: Good Housekeeping