Some tea got spilt all over my white bed sheets and seeped down onto my mattress.  I was worried at first, but then I remember how I was always told that peroxide (and or) baking soda was an AWESOME stain remover.  I quickly got some peroxide and poured it into a spray bottle and sprayed the mattress and soaked my sheets in it.  I don't think I've ever seen them this white :O you guys I'm so proud of myself! I'm adulting!!! Lol