Yes agree, mine frequently crawl out for the night, often hear them scurrying down the passage, not sure what they get up to so keep my door well locked.
Tried...gave up to focus on other livestock to breed. Couldn't keep the Zoe's alive for more than 2 or 3 weeks...
that's not a bad start and similar to other folks first attempt, I would persist with it and you will be rewarded...
My initial error was wayyyyyyyyyyyyyy too much salt...which is why my zoe's died within the fisrt day after introducing them to the saltwater tank... By my third attempt i got them to around 18days or so before they kicked the bucket.