Rebar barrier can keep dogs in

RE “Worry About Dog, Not Fence” [Oct. 6]: I suggest a much simpler and less expensive solution to keep a dog from digging his way out under a fence. Instead of installing concrete blocks to a depth of at least a couple of feet, use 1/2 -inch- or 3/4 -inch-diameter rebar along the fence, pounded into the ground vertically at 6-foot spacing. Rebar can be purchased at any home center in 24-inch lengths and is relatively inexpensive. The homeowner or a handyman can do this. It is a tedious process but is very effective and economical.

LEN MARINO

El Cajon, Calif.