When mature, they emerge through the breathing hole, fall to the ground and pupate. In the spring, the adult heel flies emerge and start the life cycle again by depositing eggs on cattle. Follow precautions and waiting periods. Mange Mites Mange in dairy cattle is caused by small mites feeding in the skin. Tunneling by the mites causes a skin injury that forms scabs.
Mites increase rapidly because conditions under the scab are ideal for their development.
This product cannot be used on lactating dairy cows or cows within 35 days of freshening. Kenneth R. Bolen, Director of Cooperative Extension, University of Nebraska, Institute of Agriculture and Natural Resources.