Best home remedy for paper cone woofers cleaning the dust off?


Whats the best way to clean them? Other than aerosol pressured cans. Also should you treat the rubber surrounds or let sleeping dogs lie?
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My paper cones usually have accordion surrounds so I use a soft paintbrush which has never been used for anything else, and it does a pretty good job of reaching into the valleys of the accordion. 
Are people not concerned about there being potentially residue from a Swiffer? They appear to be treated.