DS had a pee accident last night in bed. We changed him in the middle of the night and moved him to our bed. This is the first time after being fully potty trained and he is 5. So, I was not expecting this and reasons aside, how do I deal with a peed on mattress?! It's nit very sunny here where I live and I don't know how else to sanitize it and have it ready fir tonight. Suggestions please!