A solution like upholstery shampoo or a mild detergent can work well.
OTTY discouraged the use of baking soda to help remove mattress stains as it could damage the material.
As aforementioned, cleaning your mattress every six months is recommended, however this does depend on factors such as the materials that make up the mattress, its age, and the person sleeping on the mattress, according to OTTY.
If you suffer from allergies, the company advised cleaning your mattress more frequently, depending on the severity of the allergies.
The experts said: “For example, during a flare-up of eczema, we recommend you clean your mattress as soon as possible.”
source: express.co.uk