HELP ! Dogs destroy outside decorations

Last year I didn't decorate at all due to the fact that we live where there are from 5 to 10 dogs that tear everything up.All year I have junk in my yard from them tearing up other neighbors yards. What I would like to know is if anyone has ideas for props that the dogs can not get to or are unable to tear them up.
I have 3 inside dogs and 2 outside dogs and they were taught not to tear things up .I can leave them alone and come home to the house just as I left it .Same if I leave them outside.I love Halloween and really hate it when I cant decorate outside
any Ideas ?