Wear a quality dust mask. It may not only be dust you're getting in your lungs. Any camper that's been sitting vacant for awhile may have rodent droppings, insect carcassas and a myriad of other air borne things floating around.
After donning your hazmat suit, use a high powered leaf blower to get the particles out of the hidden places and out in the open. Liberally spray Pledge or similar over every surface, and wipe changing your rag frequently. I would finish up with a quality antibacterial spray such as Lysol Kitchen to ensure cleanliness. Remove anything that can be washed in the machine and wash it well. Finish with Febrez and spray liberally and wipe it clean. Rent/Buy a rug shampooer to clean any carpeted areas. Use Olde English or similar on the cabinets.
Another easier trick is to call a mobile detailer and let them do the job for you...:W....Dennis
