One cat loves to nibble the "needles" on my artificial tree. The other thinks the ornaments are her "toys". - tree toys

The needle is then ill-eaters. My "kleptocracy" thief loses media ornament ornament for me, and I can not hang ornaments!. I have tried to put a spray bottle near the tree, but can not stay awake all night. A cat comes into the room with my son at night, which helps. Any other ideas out there?