Got these to run along the bottom of my existing fence so my puppy can't get through. It is a little tedious to screw all the little legs on, but I did like the option of using some without the legs to zip tie to the bottom of the gate so I can block the puppy's escape while still allowing for use of the fence. The little clips to hold them together are kind of a pain, but for my needs I didn't bother with them. I just stuck them in the ground next to the fence and they're good.