once about 20 years ago on my grandfathers farm we grew a small plantation of tomatoes there was a farm next to us that raised a couple of pigs one winters morning those pigs got into our tomato plantation and started destroying all of the crops my grandfather tryed to ask our neighbor to fix the fence where the pigs were getting in but the nieghbor refused so we put some barbed wire along the garden and the pigs cut thierselves to death on the barbed wire and soon enough our neighbor fixed his fence and we never had a problem again