Ooops!! Grandchild has wet the mattress - any suggestions what I can do to remove the stain and smell before I put it out in the sun - if it would only come out!! It is a futon mattress if that helps. Thanks

Sponge with Baking Soda and warm water, then air dry in the sun
Hope this helps
Raewyn

Thank you so much Raewyn you are a fountain of knowledge. Of to do just that.