I may give the heated dog waterer a try in the future but for now this is all I've got. I've used up my chicken budget so it will have to wait till next winter.
Caution on using the heated dog water bowl :/
I just posted on another thread about my heated dog water bwls I bought last year. BOTH of them had a burnout on the underside of the bowl recently. Luckily they didn't catch my coop on fire. I've cut the cords off both and from now on I'm hauling water.