What to do about this mattress/cover?

[anomaly13]

About a year and a half ago we bought a brand new king size simmons beautyrest mattress. We really needed a new mattress, something very firm and large for us and the kiddos. We also needed to finance it. So we got it for a good price with 0% interest for a year and paid it off before the year was up. We never did any research about how nasty mattresses are, though I pretty much already knew. We also got a protectabed mattress cover for it which I know nothing about and am sure is also quite nasty. DS2 sleeps in our bed everynight on a sheepskin, but I am getting a little concerned about all the nasties we are inhaling. We cannot get rid of it, or sell and buy a new mattress. What can we do? It there a cover out there that is waterproof, since we share with kids, but natural? Something that will keep us from inhaeling all that stuff at night, and keep the dustmites out?

[Cavy]

I wonder if something like these would do:

http://www.nontoxic.com/orgmattresspads/orgquilted.html

Don't know about the dustmites, regular washing at 60deg. C is probably best way to cope with that (and steaming the mattress itself, too).