How to use milky spore powder
Spore pathway (Bacillus popillae) is a bacterium used to suppress grass larvae since their first registration in 1948. These spores are ingested and continue to germinate inside the larvae. As the spores accumulate, they turn the larvae to a milky white color. When the larva finally dies, they release 1-2000000000 spores back into the soil. This allows the spores to continue suppressing these pests in the long term.
Milky spores are sold, either in granular form or in powder form, although granular products have not been thoroughly tested, according to the University of Delaware. Instructions on the label should be followed closely when using any of the forms.