Okay! A hopper is what I gave tonight and he seemed totally stressed out by it, but at least not terrified like he's reacted a couple times. Honestly it seems the more it moves the more scared by it he is, but if it doesn't move at all (pre-killed) it's of no interest :/ Maybe the pinky rat would work!

With aspen shavings, do I just make sure to keep his water topped up? To make sure he won't dehydrate.

And hmm I did try to bury the hide into the substrate but it seems he was pushing it around in there. I could definitely try some moss, I've got some spagnum squared away somewhere!

If he doesn't eat this pre-killed and I take it out, should I wait the whole week until I try again? I don't want him getting in the habit of refusing (which he already is) but it also freaks me out to wait so long when he's not getting any food in him...