Euphorbia milii Thai hybrids: Can they overwinter dormant?

I have two Euphorbia milii Thai hybrids that are new to me. Do you happen to know if they can overwinter dormant in the dark with no water, either (1) in a dark garage at cool temperatures or (2) in a closet at room temperature?

I just put mine inside somewhere sunny - don;t think they can survive no light

Thanks. Do you water them a lot in the winter?

Happy, haven't had any of these in years, but used to bring them inside over the winter and gave them the sunniest location I could find. I always found that they don't like alot of water, too much and they'd rot.

Thanks, RCN! That's what I thought. We'll see if mine will survive!