Our two voids have just been allowed 24/7 free range for the first time (we used to keep them in at night) and our youngest has decided it's amazing.
He used to return every 2-3 hours in the day and scream at me, but now he's out for 12-15 hours at night, comes home for some biscuits, sleeps on my counters all day then disappears to do some more important cat business 