According to Beautyrest, the most effective way to clean a soiled mattress is by applying baking soda to the affected area, allowing it to absorb as much moisture or debris as possible before vacuuming it away. Repeat this process until the baking soda no longer absorbs any residue.
Beautyrest explicitly advises against using liquid cleaners or chemicals, warning that these substances can void the mattress warranty.
Alternatively, you can use a protector to avoid having to clean the mattress cover in the first place. Washing this protector along with your regular sheets is a good way to prevent the buildup of mites, bacteria, fungi, and other germs.
