Back when I took care of Texas chickens... I really liked the old metal waterers.I have a theory, about arbitrarily choosing "the best" vs. "best for your situation" given the climate; AKA your latitude and sun exposure of the water/food containers.
Just because the simplicity of the 1.5gal flip over red & white waterer that we got at TSC is likely the most prolific given its design. However, as we still use it - wouldn't call it the "best". Hardly. I haven't had any others yet. I tried the metal version. The dispenser plug failed right outta the box.... I've seen so many ingenious DIY's that I'm seriously thinking that if we put a few crayon lines on the map for Latitudes that we would discover: A) that specific DIY designs are better for equalorial to ~30-ish degrees Latitude.
B) certain retail designs are good for moat latitudes but, not for "_x_" latitude.
C) diy design "z" isn't a good idea for above ~4000' elevation or above ~40-45° latitude due to the inability to keep it from freezing due entirely to its volume.
These are a few thoughts I've been having as I try to figure out which is the best DOY design that will work in my area of North Texas.....
Thoughts?
Of course, this was years back, so probably made better than they are now...
But the one we had lasted a very long time, it was set in the shade, so stayed cool. It held over a gallon, so a fill up lasted.
Freezes weren't long or hard enough to break it. We just used a water pan for the few days a year when a freeze lasted more than 2 hours.