Prepared by R. L. Sherman, Department of Biological & Agricultural Engineering
and S.B. Bambara, Department of Entomology, North Carolina State University
Although earthworms have few natural enemies, insects are attracted to worm beds because they provide
a moist, organic environment. If worm beds are not cared for properly, acidity can build up and create conditions that allow worms’ natural enemies to thrive. Mites in particular are attracted to an acidic,
moist environment. Although small populations of mites reside in all worm beds, under certain
conditions mites can reach very high levels and cause problems.