The mattress, by the way, gets dirty even if nothing is spilled on it, since particles of skin remain on it in the form of dust, and linen bugs can start in them. It is advisable to clean the mattress at least once a season. I advise you to read the instructions https://www.fortador-usa.com/blog/how-to-steam-clean-a-mattress-to-remove-urine-sweat-stains-dust-mites using a small household steam cleaner. Very simple guide - highly recommended.