Electric fence kits deter deer from returning to gardens after just one zap. The single strand of 660' polywire is baited to lure the deer to the electric fence instead of your garden. Once the deer touch the baited electric fence, they are delivered a corrective shock. We suggest refilling electric fence deer baits every 3 months for maximum effectiveness. An electric fence energizer is included in this baited electric fence kit as well as 30 fence posts, a ground rod, drive rod, an insulator, warning sign and light tester.