Get Rid of Japanese Beetle Grubs In Your Lawn for Up to 20 Years!

Are Japanese Beetle larvae destroying your lawn? Are the number of Japanese beetles in your yard frustrating your plant growing efforts?

Milky Spore

Milky Spore is manufactured by St. Gabriel Laboratories, and is a bacterium that is host specific and naturally occurring (Bacillus popillae-Dutky). Milky Spore, also known as Milky disease, kills the omnipresent summer-time pest known as the Japanese Beetle. Milky Spore works by specifically targeting, in a completely natural way, the white grub of the Japanese Beetle, which lives and breeds just under the surface of your lawn.

Adult Japanese Beetles feed on your flowers, roses, shrubs, and lots of other valuable garden plants. During the Japanese Beetle's larvae stage, grubs will literally eat the roots out from under your grass and bedding plants.

Using Milky Spore as a turf inoculation treatment begins the process of creating a blanket of protection for your lawn and other valuable garden plants. The Japanese Beetle grub is considered to be the weakest link in the life cycle and the most vulnerable point to introduce a natural infection. After the spores take up residence in treated lawns, they are consumed by living grubs while they eat, which begins their journey to annihilation. The Milky Spore disease will soon begin to cripple the grubs, greatly slowing down their destructive feeding. Once this cycle is initiated, the infected grubs will die in one to three weeks.

And here's the first bonus! As those Milky Spore infected grubs decompose, each one releases billions of new Milky spores which will naturally spread throughout your entire lawn and landscape when properly applied. The second bonus is that they will continue to thrive and hunt down further Japanese Beetle grubs for between 15 and 20 years!

Milky Spore is completely benign to other living beings. It will not harm birds, beneficial insects, bees, pets, children, or adults. The product is registered with and approved by the EPA. Milky Spore has no effect on water sources including wells, ponds or streams.

Many neighborhoods organize community efforts to control Japanese Beetle infestations and grub damage. By having multiple homes applying Milky Spore simultaneously, control can be more uniform. Large areas that are treated with Milky Spore often result in longer periods of control.


Japanese Beetle grubs can cause extensive damage to lawns because they feed on your grass roots. Sections of your lawn will turn yellow first, then brown, and will eventually die. Grubs literally chew the roots off the grass, so you'll notice that it is easier to pull pieces up with your hands. If you cut a section with a flat spade, roll it back like you would a carpet and you will reveal the evil grubs. So if you noticed a patchwork of dead areas in your lawn, usually later in the summer, you should definitely check for Japanese beetle grubs.

Japanese Beetle Lifecycle


Since beetle grubs live just under the surface of the soil, they feed on roots and other vegetation. As they burrow along through the soil while feeding, they absorb the Milky spores as they eat particles of soil and other subterranean materials. The Milky spores actually germinate while inside the grubs, multiplying rapidly in their blood. As the bacteria increases in the blood, the spores are formed again which completes the bacterial cycle.

Some beneficial diseases will kill insects in just a few days or even hours, but the milky disease works slowly. Some grubs that have been infected can live for months being infected with spores, especially in lower temperature environments.

Occasionally, grubs that become infected late in fall will survive until spring. After they have been infected by spores, however, Japanese Beetle grubs won't develop any further and will eventually expire.

Targeting and eliminating Japanese Beetles also helps reduce or eliminate damage by moles and voles, whose favorite meal is beetle grubs. Milky Spore disease can greatly reduce the incidence of damage by these varmints in your lawn.


When Milky Spore is applied to a large number of a comminities' lawns and parks, reduced Japanese Beetle populations throughout the neighborhood will become apparent. After the majority of a community has been inoculated with the milky disease bacteria, only a very small number of grubs will survive and actually transform into adults, significantly reducing damage to lawns and other targeted vegetation.

Keep in mind that even though treating your yard will reduce the grub populations and protect your lawn, it will not prevent the adult Japanese Beetles from flying into your yard from untreated areas in the neighborhood.

Directions For Use:

To use Milky Spore , simply place one level teaspoon of Milky Spore powder on top of the grass in your lawn, in a spotted grid pattern in rows four feet apart every four feet. The ten ounce container will treat 2500 square feet while the 40 ounce box will treat 10,000 square feet, or about a quarter acre. Apply Milky Spore to your lawn anytime during the year that the ground isn't frozen. It's important to lightly water immediately after you apply it so as to soak the spores into soil. The untreated areas between spots will become inoculated naturally as the grubs travel underground after being infected. Due to the time it takes for the disease to fully infect all of the treated area, complete control won't be achieved until the entire yard has been inoculated, which may take between one and three years. The good news is, once it has been established,. Milky Spore has been shown to work for 15 years or longer with a single application.

You can easily construct a homemade dispenser by attaching (duct tape works great) a one pound coffee can to a four foot long stick, six inches from the bottom using duct tape. Prior to attaching it, punch 15 nail holes into the bottom of the can. Fill up the can with your Milky Spore Powder, and simply walk in straight lines, tapping the stick on the ground every 4 feet in rows 4 feet apart.

St. Gabriel Laboratories manufactures their milky spore powder to USDA specifications of 100 million spores of bacillus popilliae per gram of powder.

For more information, visit the Frequently Asked Questions (FAQ) section below.

Milky Spore Powder 10 Ounces for Japanese Beetle Control in Lawns
Milky Spore Powder Japanese Beetle Control | 10 Ounces | $34.95

Treats 2,500 square feet.
Eartheasy Price: $34.95

Milky Spore Powder 40 Ounces for Controllng Japanese Beetle Grubs in the Lawn
Milky Spore Powder Japanese Beetle Control | 40 Ounces | $99.99

Eartheasy Price: $89.95
Treats 10,000 square feet, approximately 1/4 acre.


What exactly is Milky Spore disease?

Milky Spore is a bacterium that naturally occurs which infects Japanese Beetles, June Beetles and a variety of other common grubs found in lawns.

How fast does Milky Spore work? How long will it last?

When grubs are active and feeding, Milky Spore goes to work as soon as it is applied. After the grubs have been infected, they will naturally multiply Milky spores into billions of new spores which is responsible for the spreading nature of the product. Since it works fastest in warmer climates, effective control can be achieved in as little as one year or as long as three, depending on the severity of the infestation. In colder climates like New England, it may take three to five years to achieve effective control. However, once it has been established in your lawn, Milky Spore will continue to kill Japanese Beetle grubs for as long as 15 to 20 years.

Do freezing temperatures kill the Spore? Will heavy rains wash it away?

Milky Spore is not negatively affected by freezing or other adverse climatic conditions. Heavy rains can wash newly applied Spore dust, which may necessitate retreatment. This is precisely why it is recommended to gently water the spore into your lawn immediately after application.

Do fertilizers or pesticides affect Milky Spore?

Milky Spore has no interaction with and is not negatively affected by herbicides, pesticides, fertilizers, or other chemicals for the lawn. You may apply all of these products at the same time without harming the Milky Spore.

Is Milky Spore safe to use in my vegetable garden?

Yes, Milky Spore is completely harmless to vegetable and fruit crops. It contains no chemical pesticides. It may also be safely applied in gardens, around swimming pools and water wells.

Should children and pets be kept off the lawn immediately after treatment?

Absolutely not! Milky Spore has absolutely no affect on pets, fish, birds, bees, wildlife, or humans. It is not a poison in any sense of the word..

Why can't I mix the Spore with water and spray it on?

Milky Spore dust must remain concentrated and applied in spots to properly spread through your lawn. You should never try to apply straight Milky Spore powder with a fertilizer or grass seed spreader.

How soon can I cut my grass after applying Milky Spore?

It is best not to mow your lawn until after the Spore has been gently watered into the soil using a hose or be a gentle rain for at least 15 minutes or longer.

What's the point if I treat my yard and my neighbor doesn't?

Even if you are encircled by property untreated with Milky Spore, your lawn will be protected. Over time, the Spores may even spread into adjacent areas by natural transfer.

Won't the adult Japanese beetles fly over from my neighbors yard?

Japanese beetles only feed during the first two weeks of their adult life. If they fly into your yard from other areas, any grubs they lay will be infected with the spore in existing in your yard.

Will Milky Spore help my mole problem?

Since grubs are the favored food source for moles, voles and skunks, reducing the grub population with Milky Spore may cause them to feed elsewhere. Of course, this may lead them to the untreated lawns of your neighbors instead. So, in answer to the question, Milky Spore does not in any way affect moles, other than reducing their source of food.

Can my lawn have too many grubs to control?

If your lawn is rapidly dieing due to an excessive amount of grubs, more than say, 10 per square foot, you can apply an annual chemical grub killer for more immediate control. The only caveat being, that Milky Spore spreads through living grubs, so by applying an annual insecticide, you may slow down the effective spread of the disease.

How does one know if they have beetle grubs?

As previously pointed out, beetle grubs feed on the roots of grass which will then turn brown and die. By lifting the area of dead grass, you can determine if you have beetle grubs by looking for the white larvae, which will be curled into a "C" shape and are about the size of a penny.

Is it better to apply Milky Spore in the spring or fall?

Fall is the ideal time to apply Milky Spore, as the grubs are in the first instar stage during this time and are more actively feeding so that they can store body fat for overwintering. By contrast, grubs have reached their 3rd instar prior to molting In the spring, and therefore do not consume as much food.

Do grubs get infected by Milky Spore in spring after hibernation?

Grubs can only become infected by actually swallowing a spore. Simply rubbing up against the spores will not infect them. Since grubs eat less during the spring, they will not get infected as quickly as they do in the fall.

How do I apply the Milky Spore powder? How much do I need?

To become fully effective, Milky Spore powder is best applied in teaspoon amounts in four foot intervals in rows that are four feet apart, which will create the desired grid pattern. A ten ounce container will treat 2,500 square feet while a 40 ounce box will treat 10,000 square feet, or about a quarter acre.

What is the shelf life of Milky Spore?

As long as it is stored in a cool, dry area, Milky Spore powder will remain viable and has an unlimited shelf life.

What if Milky Spore gets in my eyes or I accidentally breathe it in?

There is absolutely zero cause for concern since Milky Spore is not a chemical based pesticide. The only living thing that Milky Spore negatively affects are Japanese Beetle Grubs. If you accidently get some in your eyes or mouth, simply rinse the affected area with water.

Milky Spore Powder 10 Ounces for Japanese Beetle Control in Lawns
Milky Spore Powder Japanese Beetle Control | 10 Ounces | $34.95

Treats 2,500 square feet.
Eartheasy Price: $34.95
Milky Spore Powder 40 Ounces for Controllng Japanese Beetle Grubs in the Lawn
Milky Spore Powder Japanese Beetle Control | 40 Ounces | $99.99
Eartheasy Price: $89.95
Treats 10,000 square feet, approximately 1/4 acre.