DD went to sleep after having way too much half formula half milk and rolled and bounced and jumped her way to sleep. I guess too much tossing and turning with too much in her system on top of falling asleep on her belly with her butt in the air made vomit all of the formula cut by milk. She was in her Tot Block and it got all over the mattress part. It specifically tells you not to saturate it in water, but spot cleaning is not getting the gross smell out. What do I have to do to clean this thing properly? I looked to see if they have replacement mattress inserts but I can't seem to find any. Is there any hope of getting rid of the smell?