Whether your moving away or just storing an extra mattress for the time being, you still need to keep them cleaned and contained, free from any dirt or parasites. Store them in convenient bags, such as this Banana Mattress storage bag from The Container Store, so that they are kept protected to last longer.

They’re available in four sizes to accommodate any size mattress. They are also convenient for storing other oversized storage items like outdoor furniture and cushions, cribs, highchairs, extra dining table chairs, small furniture items, grills and bicycles. These bags provide see-through protection in attics, basements, garages, and remote storage units. Bag ties are included for a tight seal against moisture, dust and insects. For enhanced protection against fabric-eating pests, toss a few Moth-Away®Herbal Moth Repellent sachets in each bag before sealing

via The Container Store