Mulesing is a part of sheep breeding technique in most Merino wool producing farms. It involves removing the skin around the breech (backside) and tail to enhance the naturally bare area which reduces the risk of flystrike caused by a unique and very aggressive blowfly (Lucilia cuprina). Merino sheep are the most susceptible to fly strike. The wool follicles are quite dense and in certain areas of the sheep will promote an environment for the fly to lay eggs that will hatch and consume living flesh. Mulesing removes a small amount of skin from the breech of the sheep and reduces the area where urine and dung will stick. The blow fly are specifically attracted to these areas. There are many other areas of the sheep that are susceptible such as the shoulder, chin and horns. Mulesing is only a small part of protecting the sheep from fly strike. Sound farm management is the greatest protection against flystrike Due to its specific climate, the blowfly is mainly present in Australia and the low lands of New Zealand. These are the main countries where mulesing is performed and where most Merino sheep are bred. Other countries producing merino wool include Argentina and South Africa where mulesing is not necessary as the flystrike is not present. Mulesing-free wool or non-mulesed wool is wool that comes from sheep that have not been mulesed.