Fridge frogs

[Oliverian]

I have tadpoles that will be frogs in a couple of weeks. I've heard that you can keep them in a refridgerator during the winter when they are hibernating, as long as you open the door a couple times a day to let fresh air in. I just don't know whether or not I should keep them in there. I could keep them in the garage, but the temperature gets pretty cold, staying below freezing for a long time. Also there might be a risk of chemicals affecting the frogs, because my brother keeps his motorcycle in there. I just need some advice from you guys that keep frogs or if you know something about hibernating them. There isnt a lot of good info on frog hibernation on the web. Thanks :medcomcic