Why does hamster block up the tubes in its Rotastak cage with sawdust?
you need to take the tubes out of the cage and get another toy as the same thing happend ti me and i just got another toy and it was fine and as for the food on the wheel i would just cut low on the food and whenever she goes with full cheekpouches to her wheel if the wheel can come off then take it of until she goes to her bed and empties her pouches then put the wheel back on