If the mold is just on the surface, you can try dabbing the bed with a sponge soaked in white vinegar and water. Then dab the affected area with just water and leave the mattress out in the sun to dry. However, if the mold is growing inside the mattress, there’s no way to get rid of it without tearing apart the mattress. We suggest that even if you think the mold is only on the surface, it’s better to err on the side of caution and buy a new mattress. Exposure to mold can trigger sneezing, watery or itchy eyes, a runny nose, and more.