Others remain in the tunnels and continue their development. The larvae develop through two nymphal stages, and then finally develop into either a male or female. The newly emerged adult females either remain in their tunnels or burrow side channels where they are fertilized by the males. The fertilized females continue to produce new tunnels, and after four or five days begin to lay eggs. The male dies shortly after copulation.
Infection is spread mainly by direct contact between cattle.
However, the animals' bedding and objects that come into contact with infected animals may become contaminated and help spread the infection. These stalls should be cleaned and fresh bedding added. Instruments and grooming tools should be disinfected. Sarcoptic mites are susceptible to dryness and therefore do not survive for more than a few days off cattle. Cattle in poor condition are most susceptible to infection.