What do you use to keep high gloss speakers clean?

There are also some very good ceramic automotive products out there that, if applied when the speakers are new, should last the lifetime of the speakers if kept inside, and will create a hard, shiny barrier against scratches and swirls. As always, test the product in an inconspicuous area. 

I meant to state the product I use is called Novus 1.They make 3 versions. I use it a couple of times a year, it really puts the shine back to original. I also use a swifter several times a month.

ozzy

"Novus Plastic Polish - Novus 1 - Plastic Clean & Shine Gently cleans all plastics without scratching. Leaves a lustrous shine that resists fogging, repels dust, and eliminates static. Resists finger marking Contains no abrasives or harsh chemicals Leaves a smooth, clean, greaseless shine FEATURES AND BENEFITS of Novus 1 - Clean & Shine"

Whatever cloth one uses be sure the edging is not sewn with plastic thread. Only cotton.

+1 McGuire's Quick Detail

I use a microfiber cloth to wipe down the speakers.  On another note, I do the same on our high-gloss bedroom furniture and the wood trim in our cars.