Hi Nina
Nice to see you back on the Forum, I was wondering where you had go to!
There is just one thing I would add re. Penny’s box. Don’t be tempted to make the entrances any bigger, even though they seem quite small. My box is similar inside, but has two corridors near the entrance, one only 10cm wide and the cat still got in. The only difference is that the entrance on mine is a bit bigger. If all else fails, the half brick I put in the first corner seems to be deterring them so far.
I really like Penny’s idea of having two entrances, so that if something else should get in, there is an escape route.
Good luck.
