On Sat, 27 Dec 2014 13:38:50 -0600, wrote:

I think the pros have some sort
of method to vacuum up the dust as they sand it. I'd rather pay them,
than have to spend weeks cleaning the house afterwards.

There are various brands of sanders. One unit you attach your own
shop vac ... or

_Festool PLANEX Drywall Sander_

https://www.youtube.com/watch?v=Srk2IUpbHNQ