Vinegar wins it!!! There really wasn't even a close second. The experiment was supposed to be over on Friday, but the vinegar peeps want fully dissolved so the class wanted to wait over the weekend. And today it was gone except for just a little foam! BUT...the peeps eyes were still there!! I did some google research and interesting fact about those peep eyes are that they can only be dissolved in ethyl acetate and xylene. And we eat that!! But they are tiny brown specks sooo I don't know! You can find my dissolving peep observation book here at my TpT store.
And here are our final products!!