Well, with Neptr's enclosure I do thing I've had some problems with things like my hand has to come from above him as there's no other access. Though, he's getting used to it and if I start from a while away, and he can see where my hands coming from, he doesn't get as visibly scared.
His enclosure doesn't smell at all, which I thought was quite odd considering it was small. However there were lots of tiny hamster poops, so unsure of how it was rather smell-less. Found no urine soaked bedding, which was good, but I don't think he's litter trained.
Also, not just related to Pico, but Neptr too:
Where do you guys get your moss from, if you have moss in your enclosure? I've found some Fresh Welsh Sphagnum Moss
on Etsy and was wondering if I could use that after freezing it for a couple days?