CAT FENCE-IN™ stops cats from climbing over fences and up trees. It fits on any height wood, vinyl, masonry, wire or chain link fence from 3 ft. and higher. Kits attach to meet the length of any size fence. CAT FENCE-IN keeps your cat in your yard and stray cats out. Brackets are mounted above netting and extend 16 inches into the yard. Adjustable vertical rods attach to the end of the brackets and angle upward 20 inches. The combination barrier works on any tall or short fence, adding 20 inches of height to an existing fence. When a cat jumps over a short fence, he first jumps or climbs to the top. The combination barrier prevents the cat from jumping or climbing to the top of the fence because the netting is between the cat and his landing place.