http://www.amazon.com/gp/product/B000FJX7YW/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1I guess I am leaning towards a heated water supply. There are days that I cannot get out there every 2 hours to change out their ice to water. So, what do you all use to keep the girls in fresh unfrozen water?
I use these. Work great. Last year one of them died when it was -30 below but hopefully we don't get that cold again! Having unfrozen water is such a luxury, my first year we didn't have these bowls and I had to keep going out dragging water down the hill in ice and snow.