Dog Fences
Containment fences are generally safe as long as the boundary wires are installed properly — you can either bury them 1 to 2 inches underground or attach them to an existing fence.

This particular example perfectly highlights why Underground Dog Containment Fencing is so captivating.
Extra Underground Electric Dog Fence Boundary Wire

Our electric dog fence is much more affordable and easier to install than traditional fencing . Best of all, dogs can't dig their way under electronic dog fences nor can they escape through holes and missing boards.
Understanding Underground Dog Containment Fencing Before the Gallery
Brandclub - PetSafe Basic In-Ground Pet Fence Underground Dog Fence. For Underground Dog Containment Fencing, this point helps readers notice the most relevant visual details before moving into the gallery.
Electric Dog Fence, Wired Pet Containment System 656Ft Electric Fence. It gives the article a little more context before the image collection begins.
Amazon.com: Electric Dog Fence, In-Ground/Underground Wired Pet Fence. The extra context helps the page feel more useful without forcing the same phrase repeatedly.
Looking at multiple sources also helps separate the main idea from small decorative details.
These notes are added so the page offers more than images and gives each visitor a clearer reason to keep reading.