Consider yourself lucky- they chew the cage- not you!!!! Try hanging intriuging treats such as lettuce from large clips to the cage top so the hammies want to find them all over their cage. Try buying a Tank Topper from your local petstore-made by Habitrail that tightly encloses the cage so you can use your tubes and treehouse. Hope this helps! Visit my topic by Pip N Squeak! Please help.
Hammy momma