St. Gabriel Organics Milky Spore Powder

The powder contains Paenibacillus popilliae, a naturally occurring bacterium. When grubs ingest the spores while feeding on grass roots, the bacteria multiply inside them, eventually killing the grub and releasing more spores into the soil to protect your lawn for years.

Yes. Because it is a biological insecticide that specifically targets Japanese Beetle grubs, it is non-toxic to humans, pets, birds, and beneficial insects like earthworms or bees.

Milky Spore is a long-term solution rather than an instant fix. It typically takes one to three years for the bacteria to fully establish in the soil and reach peak effectiveness, though it provides lasting protection once settled.

No. One of the primary benefits of this product is that a single application can remain effective for up to 10 to 20 years, provided the soil conditions remain stable.

It is effective in most soil types, but the bacteria require a certain level of soil temperature to germinate and spread. It works best when applied during the growing season when the soil is warm.

St. Gabriel Organics Milky Spore is specifically formulated to target Japanese Beetle grubs. It may not be effective against other species of lawn grubs, such as European Chafers or June Beetles.