Has anyone an idea on what to use to keep these wfc's from freezing in the winter. I live in Pennsylvania where we can expect to see temps down to 0'F. And some of the other parts of the world think we've got it almost tropical.

I've read elsewhere about putting isopropyl alcohal into the mix, but that was a Pantone type system. Ideas or directions welcome.

Live clean and prosper,
Mark H Evans