Quantum Growth Probiotics Information

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Effective Natural Biological Grub, Insect & Chinch Bug Control

Exempt from CT EPA Restrictions on K-8 and Municipal Parks!

Grandevo® PTO is an advanced, cross-spectrum insecticide that offers protection against chewing and sucking insects. Its complex actions on pests — oral toxicity, reduced reproduction and repellency — and up to 14 days of residual control gives golf course superintendents and lawn care professionals a powerful new tool to strengthen their pest management strategies. Grandevo PTO provides performance and flexibility for control of chinch bugs, sod webworms, chafers, cutworms and other damaging pests in turfgrass.  GRANDEVO is an effective control up to 2nd instar grubs and can therefore be used as a curative treatment for grub control as well as a preventative treatment. Organic and conventional growers have the flexibility to use the same product with the unsurpassed benefits that Grandevo offers as a biological pesticide. Grandevo is recognized as fully compliant for use on organic crops by the National Organic Program (NOP) and is certified by the Organic Materials Review Institute (OMRI).

GRANDEVO if effective against a wide host of scarab beetle grubs (white grubs), pest insects and chinch bugs and is safer for people, plants, animals and the environment than chemical alternatives. Insects are highly unlikely to develop resistance to this natural biological control.


• Cross-spectrum protection against sucking and chewing insects and mites.
• Activity against adults and nymphs.
• Multiple modes of action.
• No “chemical“ smell to upset sensitive customers.
• No adverse effects on beneficial insects or honey bee survival or brood development.
• 3 year shelf life.
• 4-hour REI. Minimal personal protective equipment (PPE) requirements.
• 0-day PHI, MRL tolerance exemption.
• OMRI approved and NOP compliant.
• Approved for field and greenhouse applications.
• Apply by ground, air, or chemigation.
• No spray buffer required.

Click here to review the study on bee safety for Grandevo.

Labeled for the Following Pests (White Grubs or Beetle Larvae):

• White Grubs.
• Chinch Bugs.
• Aphids.
• Mites.
• Thrips.
• Gypsy Moths.
• Loopers.
• Armyworm.
• Cutworms.
• Leafhopper.
• Sod webworms.
• Whiteflies.
• Mealybugs.
• Weevils.

What is the Difference Between GRANDEVO and Milky Spore?

GRANDEVO is a living product, the natural bacterium Chromobacterium subtsugae, as well as an isolated protein derived from the bacterium. It works through the ingestion of the bacterium and the protein, and is not dependent on the bacterium reproducing. Therefore, it is stable for years and is effective at any temperature range in which grubs are feeding. Milky Spore is only a living bacterium, Paenibacillus popilliae. Milky Spore must grow and reproduce in order to be effective, and therefore has a limited temperature range in which it works. In soils in the northeastern United States and some other parts of the country, the Milky Spore bacteria do no survive in the soil for extended periods, contrary to claims otherwise (see references below). In addition, Milky Spore is only effective against Japanese Beetle grubs - GRANDEVO has much broader spectrum control against white grubs, including not only Japanese Beetle grubs but also Asian and Oriental Beetle grubs as well as many chafers (such as the European) and borers. You get a more complete protection with GRANDEVO. Even better, GRANDEVO is also effective against adult beetles as well as all stages of grubs (1st through 3rd instar stages); Milky Spore is not.  At Green Earth Ag & Turf, we only sell the best proven products that will be effective for our customers and professional clients. We do not, and never have, sold Milky Spore due to the lack of efficacy as stated by university studies:

• University of Connecticut: "Milky Spore has not been very successful in controlling white grubs."

• University of Vermont: "Milky Spore...(has had) relatively poor or inconsistent results in the field."

• Cornell University: Does Milky Spore Work? "The overall effect of Milky Disease is as a population suppressant, not as a direct control."

• Reasons You Should Not Be Using Milky Spore.

When do I apply GRANDEVO?

Exact application timing will depend on your location and climate. The label below provides general guidelines for when to apply GRANDEVO depending on the pest.

Application Instructions for GRANDEVO

Add the required amount of GRANDEVO®, and then the remaining volume of water. Then, set the sprinkler to deliver a minimum of 0.1 to 0.3 inch depth of water per acre.
Grubs: Add 4 oz per 1,000 square feet (10 lbs per acre).
Chinch bugs: Add 3/4 oz per 1,000 square feet (2 pounds per acre).
Other Pests: Add 2-3 pounds per acre.
*Do not add GRANDEVO® to the tank mix before introducing 3/4 of the desired amount of water.

Sites of Application: GRANDEVO can be used for applications to landscape and recreational turf grasses, agriculture and horticulture. GRANDEVO is not phytotoxic and can be used on food crops, ornamentals and turfs.

Active Ingredient

Chromobacterium subtsugae, Strain PRAA4-1.

Available Sizes

• 5 lb. bags (Covers 2 acres as a foliar, 1/2 acre for grubs).
• 30 lb. bags (Covers 12 as a foliar, 3 acres for grubs).
*Pallet discounts apply.

Shelf Life

• GRANDEVO has a 3 year shelf life as a dried powder.

Scientific References

• University Study: Japanese Beetles & Leaf Hoppers (Penn State University).
• University Study: Potato Psyllid (Texas A&M).
• Scientific Study: Grapes (Vineyard).
• Information Sheet: Spotted Wing Drosophila.
• Crop Bulletin: Tomatoes.
• Crop Bulletin: Lettuce.

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