How do i stop my two eating there home

Please can any one tell me what i can do to stop them eating though there hutch they have plenty of hay and willow sticks/ball and toys but every morning they have took a bit more off ....:?

You can protect the corners by fixing some metal cornering that you can buy from B&Q or Wickes. It's like a long L piece about 15mm and you can drill a couple holes in it then fix it to the corners of your hutch using some nail tacks.

And there is anti-chew spray at pet shops. You have to re-apply every couple of days, but it helped a few of mine get out of the habit