
Monarch G Insecticide Granular
The Lawn IQ
SKU: PST-GRN-MON-2.5KGLet Us Do the Maths
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Product Details
Professional pest control made simple. Monarch G delivers long-lasting control of Argentine Stem Weevil, Mole Cricket, and Ants in an easy-to-spread granule form.
Overview
Monarch G is formulated for easy application in lawns and playing fields where soil-dwelling pests cause damage. Its active ingredient moves into the soil profile after watering, creating a protective barrier that stops pests before they reach the roots.
Active Ingredients
Fipronil 0.5 g/kg
Classification: Broad-spectrum insecticide (Group 2B). Targets the central nervous system of target pests for rapid knockdown and long-term control.
Controls
Monarch G protects against soil-dwelling pests that feed on roots and underground stems, weakening turf and creating bare patches.
- Argentine Stem Weevil (Listronotus bonariensis)
- Mole Cricket (Gryllotalpa spp.)
- Ants and Ant Nests
- Other soil-based turf pests
Application Rate
| Area to Treat | Product Dose | Activation | Notes |
|---|---|---|---|
| 100 m² | 100–200 g | Water in after spreading | For standard pest pressure |
| 1,000 m² | 1–2 kg | Water in within 24 hours | Season-long protection |
How to Apply
- Spread Monarch G evenly over the lawn using a broadcast spreader or by hand.
- Apply when pests are active (typically spring through early autumn) or when you observe pest damage.
- Must be incorporated with at least 6 mm of rainfall or overhead irrigation immediately after application.
- Incorporate immediately — without moisture the granules remain on the surface and will not work.
Important Information
- Timing: Apply spring through autumn when pests are active. Most effective when applied preventatively before pest damage is visible.
- Watering in: Mandatory. Must be incorporated with at least 6 mm of rainfall or overhead irrigation immediately after application. Without moisture the granules remain on the surface.
- Mowing: The label states no mowing restriction.
- Grass types: Safe on most lawn grasses. Test a small area first if you have rare or sensitive turf varieties.
- Repeat applications: The label states no repeat interval. Ant control generally requires more than one application, shifting to target active mounds, nests and trails as colony numbers fall.
Regulatory Information
APVMA Registration: 86567/142820
Withholding Period: Do not graze treated turf, or feed turf clippings from any treated area to poultry or livestock.
Re-entry Interval: Do not allow entry into treated areas until the incorporating rainfall or irrigation has dried. This includes pets.
Safety Data Sheet & Label: Approved label (PDF) · Safety data sheet (PDF)
Get the Right Tools
Apply with a cordless battery spreader for fast, even coverage over larger areas. Browse our spreader range and other pest control products.
Protect your lawn from underground pests. Add to cart or explore all lawn protection options.
Shipping
Free shipping on orders over $100 Australia-wide. Orders under $100 ship at a flat rate of $18. Orders are processed within 1-2 business days and shipped via reliable carriers with tracking information provided.
Returns
For full details on returns and refunds, please see our Refund Policy.



