A pig roots with the top of the snout, levering upward, and a fence that is sound at eye level can be peeled open at ground level in a single afternoon. Pen security for pigs therefore starts at the bottom edge of the boundary, not at the gate. Work the whole line in one pass rather than patching only the last gap, because a herd that has learned one lift will test the next weak stretch as soon as the first one is closed, and pigs learn routes from each other quickly.
Stop the Snout at Ground Level
Lay a mesh apron flat on the ground inside the pen along the boundary, pinned or pegged firmly down, and bury the lower edge of the boundary mesh itself so a snout meets buried wire instead of a free edge it can lift. Where the herd presses and roots with real force — feeding corners, gate sides, and any stretch facing another pen — add heavy low rails at snout height, fixed so the rail takes the pushing and the mesh behind it stays undisturbed. Large stones laid along those worked stretches add weight a snout cannot shift and make the first exploratory digs unrewarding.
A single strand run inside the fence, set low and installed safely for livestock use, teaches pigs to keep a small distance from the line itself, which protects every other fixing you have made. Walk the pigs to the strand calmly when it first goes in so the lesson is learned at a walk, not during excitement at feeding time. Check tension and insulators as part of the pen routine, because a dead strand is quickly discovered and just as quickly ignored by the whole group.
Give Rooting Somewhere Allowed to Go
Rooting is not misbehavior to be scolded out of a pig; it is how pigs forage, explore, and cool themselves. A pen that offers nowhere permitted to dig invites digging at the boundary. Make a designated rooting area well away from the fence: a patch of loose soil kept soft, logs to nose under and roll, and scattered feed worked into the ground there so the rewarding digging happens in the middle of the pen. Refresh the patch when it packs hard, and move logs now and then so the area stays interesting.
Feed and water placement helps the same cause. Troughs set against the boundary pull the whole herd's weight and snouts to the line several times a day, while troughs placed inward turn that daily pressure toward the pen's center. Shade away from the fence does similar work in hot weather, when pigs crowd a shaded boundary and root at the fence base to reach cooler soil.
Check Daily, and Keep a Fallback Ready
Walk the full line daily, looking for lifted mesh, fresh scrapes under rails, loosened pegs, and soil heaped against the boundary from the inside. Repair any lift the same day, packing soil back, resetting the apron, and adding a stone or a rail where the attempt was made; a gap left overnight is a route by morning. Recheck repaired stretches the following day, because a pig that nearly succeeded returns to the same spot with more determination.
Even a well-built line deserves a fallback. The Lost Pet Alert System on KinsLe is that fallback layer, not a substitute for rails and buried mesh: if a pig gets out despite the daily checks, an alert can reach people nearby while you search the lanes and neighboring ground a pig will probably follow toward feed or shelter. As a fallback layer, the Lost Pet Alert System file on KinsLe can notify keepers close by and give anyone who spots the pig a direct message route back to you.