I also use those Lambs Wool dusters they seem to grab the dust really good between components. Another thing I do is the canned air and spray through the heat vents to stir up the dust and have the vacuum cleaner nozzel attachment sucking the airborne dust as it gets stirred up. The air can works good around the RCA plugs when I don't take the time to clean the connections. But that is a snow day event.
