This works perfectly to keep my 5 gallon chicken waterer from freezing through our northern new york winters--athough naturally the watering nipples in the bottom sometimes freeze up. The cord is only about a foot long, but it makes bucket refilling easier. Buy this! Your chickens will thank you.
The one I had like this, lasted 20 yrs. The birds look for a water source during winter and it provides that for them. The birds take baths too, even in 20 degree temps. It is a joy to watch them enjoying something they can't find anywhere else in the neighborhood. This product does not run the electric bill up like some of the cheaper ones do.
This Bird Bath De-Icer does the job. It keeps our bird bath ice free, even here in Wisconsin in the dead of Winter. Water does evaporate from the bird bath quickly with it, so you have to make sure to fill it every day. Otherwise, it is wonderful for our feathered friends.