Dos is hereby grounded. >:(

[velma]

Hector had a medium spinner while he was in his other cage. To be honest the pee thing is one of the reasons why, when I swapped him back to his original cage, I gave him original wheel back for ease of cleaning. His current wheel is easier to wipe. (The hams aren't in my bedroom so I don't have the noise issue.) But you can seperate the two pieces to wipe them out. It's a pain but you can do it.
Even if you can't get to the pet shop for sand or litter, make a toilet corner & put soiled substrate or even the tissues you used to wipe the wheel down in it. I use a biscuit jar for my Syrian but anything would do temporarily. It should encourage him to start peering there.