If your dog likes to dig, scratch and paw at itsZinger Winger Chew Protector for Dog Crates is the only way to keep him from lifting the corners of the mat may be to install a chew protector around the interior of the crate. This will provide a 1" overhang and prevent the mat from being lifted up. The pre-cut and drilled channels use the same hole screws and hole configuration used to assembly the Zinger crate so no drilling is required.