Как убрать пятна с матраса после неудачной чистки? Пожелтел отбеливатель, что делать? Советы!

My kids made stains on my brand new matress so I tried to clean it and the soap I used turned the mattress blue so then I used bleach and it look clean but then once it dried it was left with yellow rings. Any cleaning tips? It would be appreciated greatly because its driving me crazy lol I was even thinking about those Bissell cleaners, Have you guys ever had one? Did it work?