I helped a friend clean out his attic after some mice got in, they chewed through a vent and made a mess. We had to take out all the old insulation, and it made me wonder if insulation removal be a service on its own? Some people just want the old stuff gone before they fix things or put in new insulation. Has anyone tried offering just removal? Does it work well, or do most customers want both removal and install? Thanks for any tips!