The heavy duty dry vacuuming was done with my Royal Dirt Devil so-called "Classic" model. It has strong suction AND a rubber belt-driven roller brush. It sells for about $80 at vac stores that sell Dirt Devil products. There is a cheaper model that has an air-driven roller brush, but the airflow isn't strong enough to keep the brush spinning when any pressure is being applied to the fabric.
I used a thumbnail here & there while dry vacuuming when I came upon any dried food residue, to pry it off and/or break it up into small particles. I used my 6" orbital stair tool with 8" damp pads to work on the areas which take more use, such as the top of the seat cushions and the arms. I spray cleaning solution lightly onto these areas with a 2-quart mini pump sprayer. I use the small pads by hand to wipe down the sides and back, and any other areas where little or no soiling is evident.
