That nook under your appliances can get messy as crumbs and other miscellaneous items slip underneath. Don’t try and move the massive machine to clean out the grime. Just use this tip from Joyce Martin of Las Vegas.
To clean under a washer, dryer, refrigerator or stove, cut off old pantyhose so you have a long length. Insert a yardstick into the hose and hold or tape the loose end to the yardstick. Clean underneath your appliance and vacuum the resulting debris, then discard the hose.