(and what's it doing to your stomach.....????!!!!! But I gotta try this - looks so cool!) REALLY????? Summer Activity. 1/4" Mt Dew in bottle, add tiny bit of baking soda and 3 capfuls of hydrogen peroxide. Shake and it glows. Pour on sidewalk to "paint"...Who knew!? (The kids will have a blast!!)" NEED TO DOOO!