A few weeks ago I mentioned a few great ways to clean your vents. The subject is so thrilling, I'm sure the excitement can hardly be contained. So if you're not a fan of doing it all that often, check out this simple trick to having to do so less often.
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24. Wax your vents with car wax to keep the dust off all year. | 31 Ways To Seriously Deep Clean Your Home
Use a bag as a mitt to spread furniture wax or polish. Then buff to a shiny finish using a soft, dry cloth. Have to try with car wax too.