The average innerspring mattress lasts between five and ten years, but there are some things you can do to prolong its lifespan. First, clean your mattress regularly to remove any dirt, dust, and debris from the surface. You should also consider adding a waterproof mattress cover to protect your mattress from damage, like spills or pet accidents. Wash your mattress cover each time you wash the sheets to ensure that the cover itself is clean, too. Rotate your mattress every six months to ensure that it doesn’t wear prematurely. Some innerspring mattresses can be flipped over, which can further prolong the life of the bed. But, many new innerspring mattresses and hybrids have a defined top and bottom side, so you can’t flip them. If you can, flip your mattress yearly. Otherwise, just rotate it. You should also inspect your box spring or foundation occasionally to ensure that it’s structurally sound and supportive. Just like a sturdy building needs a solid foundation, a mattress needs a base with structural integrity to offer support. If your foundation lacks support, adding a large piece of plywood cut to the dimensions of your bed can be a cheap fix that can help you get some more time out of your bed before you need to replace it. If your mattress is getting towards the end of its useful life, you can squeeze some more time out of it by adding a mattress topper. While a mattress topper won’t solve all the problems with your old mattress, it should provide a notable improvement.