Has anyone ever used a liquid sandpaper, also often referred to as a deglosser, for prepping trim before painting? I have a very old home that may or may not have lead paint and I want to paint the trim, but do not want to hire a lead abatement company or breathe in the toxic dust particles that could potentially result from sanding, so I would like to use a deglosser/liquid sandpaper before painting, but have never used one and I am curious how well they work. Any advice would be greatly appreciated.