Premier Enhanced 40" Electric Sheep & Goat Net Fence, Yellow, 9/40/6EY Installs in approximately 15 minutes. Contains sheep, goats, cattle, and pigs. Repels coyotes, foxes, dogs and bears when properly energized! FENCE MUST BE PROPERLY ENERGIZED TO BE EFFECTIVE. Energizer is not included. Recommend approximately .25 joule of energizer per roll of fence. Use only low or wide impedance intermittent pulse energizers. Warning! Do NOT use continuous current energizers with electric netting. For optimum results, we recommend using a Premier Solar or AC/DC energizer that fits your specific needs. Complete with PVC posts pre-fitted into the fence at 10' intervals. Recommend using non-conductive support posts at corners and ends. Multiple rolls of net are easily clipped together by power clip at end of net.