Day 11 of self-quarantine.
Get supplies ready. We used the shop vac with extension, a long-reach condenser/bottle brush, 1/4 in drill motor to undo screws (in the back of the fridge), wood blocks to prop up one side, pry bar and wood for it to rest on / protect the floor, and a trouble light.
Take off the front grill from the fridge. Clean this before you put it back on later.
Turn off the fridge. Pull the fridge out from the wall. Unplug it.
Vacuum all the dust and webs (and BBs if your husband happens to use a BB Gun out the kitchen sliding doors...).
Take off the back cardboard-thing-a-ma-jig with the 1/4 in socket.
Wipe off the fan with a damp paper towel or cloth.
Start vacuuming. The base layer here is insulation. Don't vacuum that.
Head to the front and vacuum some more.
Prop up the refrigerator. We used a pry bar on an old piece of paneling, so it didn't mess up the floor, and used two 2 x 4 pieces of wood under the two wheels.
Then vacuum while using a long-reach bottle brush (this one is bent).
Clean off the front grill and back cardboard, put them back on, plug the refrigerator in, push it back in its place, and turn it back on. If it's really dusty, it will take you a long time. It took us 30 minutes because Bob does this every year. It's called "preventative maintenance." Have you seen the latest post about how he cares for things? This is another way. ✌️