Common pathogens don't bother them.
"Springtails are not susceptible to Beauveria bassiana, Metarhizium anisopliae, Hirsutella spp., and Verticillium lecanii, or to the bacterium, Bacillus thuringiensis, and its endotoxins.
F. candida consumed and inactivated the insect pathogens without suffering mortality, reproductive disturbance or any other harmful effects."