A floor that you can clean thoroughly by whatever methods available it best. If you can have cabinets that are on wheels or are easily moved to clean under them either in your storage or class area it helps but if the powers that be say you must have carpet try for carpeting that can be removed (area rugs or the equivalent). This allows you to clean the floor underneath as well as clean, shampoo the rugs. Good luck Jessie Meltzer Pest Manager Museum Support Center Smithsonian Institution [log in to unmask]