UNTIL.......something STOPS the heat !

and they DO  

then they are big ice cubes 


bet you still check them EVERY day ?

knocking a little ice out WHEN it does, beats the heck out of thawing out and fixing frozen stuff

we have small amounts of cattle using ours in several pens, burning a bunch of electric to water them doesn't make sense

the ice over days are only during severe zero and sub zero days and cattle need looking at more on those days



and to the ones that think ONE can water a BIG bunch of cattle, well how is that a fault of the waterer ?