I read online that if you put 1/2 cup of regular salt in a plastic water bottle...seal with duct tape...at least I did...and float it in the water. It’s because salt water doesn’t freeze. I didn’t believe it and neither did my hubby. I have two in my two big under the bed totes for the ducks..the third is heated. Anyways, since I’ve done it, only tiny bits of pieces of ice. Nothing froze. They were froze solid, so it’s not their beaks. Somehow, it’s working. It’s worth a try?
I wonder if it could simply be something floating in the water, causing a little movement? Very interesting!
It is due to movement....and won't work once temps get really cold.I also read that if you put a ping pong ball it’ll work too, but I thought that might be dangerous with ducks, and Chris thought that was due to the movement