I'd agree with the above posts - the water in the bottle stays liquid but the spout still freezes. I think the only option in really cold weather is to have three or four bottles and to change them every few hours. Last winter I even found my water bowl would freeze overnight and that was in an insulated shed AND was filled with warm water last thing at night. The bunnies still sat outside all night though :roll::lol:
:? I feel a new iniciative coming along for my knitting tallents :lol: I'm thinking of a double insulated one, in a kind of 70s tea cosy cover style :lol:
Hannah