Would you have trouble if you had a picnic in Wisconsin and forgot to pack some ?

http://www.farmtoconsumer.org/raw_milk_map.htm

simonsarris kindly helped me out ( myself being in the UK )

I don't know. I don't picnic in Wisconsin all that often. If you're not from the US, you should be aware of Wisconsin's peculiar relationship with dairy; they wear it on their heads as much as eat it.