Occasionally I receive calls from customers who are concerned that their organic natural rubber mattress may have been exposed to mildew. Even though natural rubber is one of the most mold and mildew resistant sleeping surfaces, it can still be susceptible to mold, since organic mattresses do not have any anti-fungal agents added to them like chemically treated mattresses do. Therefore it’s important to know that organic natural rubber mattresses require proper air ventilation and should not be placed on either the floor or a solid wood surface. We recommend using our upholstered wood slat foundation or box spring for a traditional-style bed frame , or with a platform-style bed frame, the slats should be placed no more then 3” apart (preferably 2 ½”). I always recommend using our Wool Moisture Protector Pad if one of the persons tends to sleep hot or if there is a risk of bed wetting . The other mattress pad we recommend is the Organic Cotton Flannel Pad for all-purpose protection that’s machine washable and dryable. Research shows that once mold or mildew is present in a mattress, it can be a health risk to continue to sleep on it. That’s why it’s always a good idea to not only have proper ventilation and mattress-protector pad(s), but to also follow these evaluation tips: • Vacuum your latex mattress and inspect it regularly for stains or other signs of mold. Although latex is mold resistant, if there has been moisture trapped between your bedding and the mattress, there could be mold residue against the face of the mattress itself. Also check the under side of the mattress, between the slats, if using a platform-slat bed frame. • Spot-clean your mattress if you find any stains. You can use our Stain & Odor Eliminator for spot cleaning stains. Be sure to test a small inconspicuous area for color fastness before applying to a larger area. • You can also mix four or five drops of natural liquid laundry detergent into one cup of cool water and use a sponge or a clean cloth to blot the mixture onto the stain. (Do not rub or scrub, because it can cause stains to spread.) Do not use chemical solvents on your mattress, as solvents are toxic and will cause the latex to break down. (If spot-cleaning, make sure that the mattress is completely dry before replacing your mattress pad and bed linens. Use a space heater or fan to circulate air to dry both sides of the mattress). However once there is mildew, please keep in mind it may be to the point where you will need to replace the mattress entirely.