I have a 5 gallon cooler that I normally use as my mash tun that apparently was used for my daughter's soccer team to dispense lemonade on the sidelines (much to my dismay).
I had read that kegs should not be re-used that stored similar sugary drinks but I wasn't sure if the same held for mash tuns. My thinking is that if any sugars were left in there after a thorough PBW cleaning that the mas picked up, they would be taken care of in the boil.
Let me know if anyone has had a simliar experience and tried using the cooler again. I would really like to avoid buying another cooler if possible.