My Formica colony that is in a terrarium has been very inactive for a few weeks now, and I haven't even seen them at all in a few days. They have also not been accepting food when they came up about a week ago, and there is no longer any sign of a nest entrance. I guess my question is are they begging hibernation? I keep them in my garage so I don't control their temperature, it is the same as outside. It also hasn't even gotten cold down here in the slightest. Should I be worried about them?
Thanks