Most dairies have “hot spots” of fly breeding around calves, feeding areas, feed storage areas and manure storage areas.

Calf pens are particularly attractive to flies, say Mary Sowerby and Jerry Hogsette in the latest University of Florida Dairy Update newsletter.

A combination of manure, urine (moisture), straw, plus spilled feed and milk make for an ideal place for fly breeding. Use of wood shavings for bedding instead of straw helps a little, they say, but practices like weekly cleaning of pens help control fly populations even more.

To learn more about fly-control practices to use around calves, as well as feed storage areas, manure storage areas and feeding areas, click here.

Source: Spring 2012 University of Florida Dairy Update