Will snails in my pond survive winter?

Question

I want to buy snails to help clean my pond but I was wondering if they will die from the cold Northern Winters.

Answer 1

they shouldn't die. but ask the ponds people at the store you go to. certain types may or may not survive.  

Answer 2

Snails do hibernate in the winter, so some may make it, while other may not.  

Answer 3

Garden snails hibernate during the winter and live on their stored fat. so as long as there's some where for them to go for the winter months they should be fine