St. Gabriel Organics Milky Spore Powder Japanese Beetle Grub Control, 10 Oz
St. Gabriel Organics Milky Spore Powder Japanese Beetle Grub Control, 10 Oz
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St. Gabriel Organics Milky Spore Powder Japanese Beetle Grub Control, 10 Oz

Key item features

  • 1-time milky spore powder yard treatment to mitigate Japanese beetle grubs
  • Natural bacteria kills grubs by eating from inside
  • Guaranteed 10-year performance and may last up to 20 years
  • Safe to use around waterways, humans, animals, and plants
  • Doesn't harm beneficial insects
  • Disperse 1 teaspoon every 4 feet in checkerboard pattern
  • Apply to unfrozen ground just before it rains or water gently for about 15 minutes
  • Treats up to 2,500 square feet of yard
  • Works with St. Gabriel Organics Lawn & Garden Dispenser Tube
  • Dimensions (L x W x H): 8.75 x 5 x 5 inches
  • Weight: 10 ounces
Current price is Now $30.97
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was $34.99
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Sold and shipped by fatboy tools llc
4.4200116346713205 stars out of 5, based on 1719 seller reviews(4.4)
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4.5 out of 5 stars
stars49 ratings33 reviews
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Reviews summary

Pros

  • : Powder can be applied quickly in a grid pattern.
  • : Provides long-term value at a reasonable cost.
  • : Promotes healthy lawns with natural control measures.
  • : Reduces japanese beetle populations.
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Showing 1-3 of 33 reviews

May 16, 2026
Elizabeth
Item details
Size: EA
Sold and shipped byfatboy tools llc
5 out of 5 stars review

Verified Purchase

If you have problems with grubs in your lawn, and if you're willing to invest the time, milky spore is the product you want. My lawn was treated annually by TruGreen for grubs. This has no apparent effect. When I planted raspberry canes (which are bioligically in the same family as roses), the grubs got worse. When J would dig in my yard, every shovelful had many grubs in it. Milky spore lives on only and exactly one thing: Japanese beetle grubs. (Japanese beetles are the really shiny ones that swarm your rose bushes.) I spread the milky-spore powder by pacing across my yard with a teaspoon, sprinkling a little powder every step or two. (I try to do this shortly before rain is expected, so I don't have to bother with watering the powder into the soil.) You have to allow the spores to spread and start finding (and liquifying) the grubs. You may not see much effect in the first hrib season after you've started inoculating your lawn. But continue, Aprils and Augusts, to sprinkle. Next year, the skunks won't tear things up as badly. The year after, they won't even bother. It. Is. Awesome!

Helpful?0Z74WD9AIJAT25168899
Aug 9, 2025
Mike
Item details
Size: 1
Sold and shipped byEsbenshades Garden Center
5 out of 5 stars review

Verified Purchase

Effective

This is a classic, effective and natural control measure for grubs in lawns. You need to apply it two years in a row for maximum effectiveness and ideally you spread the powder just ahead of a light rain storm so it has a chance to soak into the soil quickly. also, it works best if you spread only a teaspoon or so per “dot” in a dot grid spaced 4 feet apart between all dots. It does not have to be uniformly spread across the lawn to work.

Incentivized Review
Helpful?0Z74WD9AIJAT25168899
Mar 13, 2017
Rose
Walmart Associate
5 out of 5 stars review

Grub killer

A friend told me about this product. Well worth the price, if it rids yard of grubs for 10 years. No more moles.

Helpful?0Z74WD9AIJAT25168899