Cleaning a Mattress

[twotrue]

My toddler spilled a cup of water on my bed. I used towels to soak up as much of the water as I could but when it dried it left a yellowish water ring. Does anyone have suggestions on how to clean this? I called the manufacturer and they said to try baking soda. I'll definitely do that but any other tips would be much appreciated.

Thanks!

[lolzlala]

I was going to say baking soda - then some water and scrubbing with a sponge in a circular motion - outside to inside. It whitened up my mattress amazingly after every spill and move that has caused stains.

[teflep]

Above and then dry with hair dryer.