Best way to clean speakers

I use a high quality paint brush that has soft bristles. The brand name is "Purdy (sic)."

Turn the volume up and they will clean themselves. Then retorque. Very simple.
Along somewhat similar line - clean your records with the stylus while playing them, then clean the stylus and that's it.

I'm going to try a Swiffer Duster it seems to lift the dust off the enclosures so I think it will be very gentle on the drivers.

Do not torque the speaker drivers. B&W has a foam gasket that if torqued too much will negate their use...Richard Vandersteen told me that the speakers are epoxied in...the screws are there to hold the speakers in place until the epoxy sets... etc. Check with your manufacturers.

What material are the drivers cones made of?
What are the surrounds made of?
These two will make the descion on how to and what to use easier.
Cheers