If you're extra concerned about intruders and pests ... However, if you want to purchase them, these spikes should only be used on tall fences. Some manufactures recommend 6 feet as the minimum ...
When it comes to deer, electric fences don't work quite as well; your best bet is an extra tall, sturdy fence — 7 to 8 feet to be safe. Read the original article on House Digest. This article ...