January 10, 2014
Don't bother with this one. It worked for a couple of weeks, then .... nothing. The very thin heating wire broke and, of course, it wouldn't heat. It's very flimsy (a thin heating wire encased in what appears to be a kind of aluminium foil). If I'd known how cheaply it was made, I wouldn't have bought it. Very sad.
February 17, 2018
Delivery was great! The product is not strong enough. Only keeps water from freezing if the temperature is just at freezing. A couple of degrees below and the bird bath freezes.
November 3, 2017
I bought this warmer about four years ago. I've used it every winter to keep my hummingbird feeder from freezing.(Placed in tinfoil plate suspended beneath the feeder with paperclip hooks). It's still working perfectly and I've just installed it for yet another winter. For the first time I'm trying a second one in a shallow birdbath. Unbeatable value.
December 27, 2016
Piece of utter junk. Will burn out if the bath runs dry. Foil is fragile. Bluejays will attack it and fly off with the chunks.
Support is non-existent.
February 19, 2017
It really does work and I see birds using it. It's a great invention and I'm getting info for someone else! Buy it. Birds will thank you.