Great thanks. I just made the dirt wet enough So that’s it feels moist when you touch it. I hope that’s good enough.If its too dry, I think they will die ( think dry crumbling dirt that only cactus live in)
The population will be very small in too dry potting dirt mix and only the ones near the moisture will survive.
If its too wet, mine will crawl out of the container thru the air holes and be plastered all over the lid.