Well, I have my cinereus group in a terrarium (80 cm x 30 cm) with a thick layer of leaf litter, garden compost, oak leaves, bark and wood pieces, so that I'm unable to see where a given female lays its eggs clutch. In fact, I hardly saw the animals during the summer months, in spite of the fact the temperature just reached 20°C (in my garage).
In October, surprise : some babies were climbing on the glasses.
As for the adults, giving them a lot of hide places doesn't mean that I won't see them.