These cat fence ground stakes are used to fasten the bottom of a fence to the ground. For cats, we suggest one ground stake every 2 feet or less. The standard installation method would be where you use 6" of fencing overlapped onto the ground, then use these bottom ground stakes to pin that overlapped fencing to the ground. For more dig protection, use more than 6" of overlap on the ground - 12" or more for example.
This prevents cats from being able to push up under your fence or from being able to dig under the fence.