I needed a heated waterer for crazy NE Ohio winters. I liked that this had a built in thermometer so it wouldn't be on all the time, only when needed. It's been through 2 winters and has never failed. (Even though my chickens knock it over frequently.)
It can be a pain to fill. If you fill the top part and then try to put the bottom on its hard to get it to line up properly. I always take it apart to clean it so I've gotten in the habit of putting the bottom on then using the port to fill it. The handle for carrying and hanging seems flimsy to me. (Why it's not hung and they are able to knock it over)
I feel safer not having the metal "hot plate" style heater. Not perfect but what I prefer it over other options.
It can be a pain to fill. If you fill the top part and then try to put the bottom on its hard to get it to line up properly. I always take it apart to clean it so I've gotten in the habit of putting the bottom on then using the port to fill it. The handle for carrying and hanging seems flimsy to me. (Why it's not hung and they are able to knock it over)
I feel safer not having the metal "hot plate" style heater. Not perfect but what I prefer it over other options.