Yes he really is that tiny
Boris and Pasha look like giants compared to him lol.
Jaska has two sand baths one he bathes in. The other has sand in it but he also has it stuffed full of tissue and he sleeps in it (Strangely Artie has done the same with his)!
Before he got his new wheel he pee'd in the substrate beside the sand bath now it's the wheel! I don't mind really as it's easy enough to clean with is being plastic when it starts to get too sticky and I only ever use water so it doesn't remove his scent. As Lizzy says I expect he'll maybe grow out of it as Boris and Pasha did. Pasha only pees in his sand and Boris has a corner in his labyrinth he pees in (he refuses to pee in sand for some reason) and at the moment Artie is fully committed to peeing on both his wheels :P