Your lawn is looking patchy, and you’ve spotted those telltale C-shaped white grubs under the turf. I’ve spent the last few weeks researching the best lawn grub killer bunnings options available online, digging through buyer feedback and manufacturer specs to find what actually works. A healthy lawn starts below the surface, so picking the right treatment matters.
After comparing coverage, active ingredients, and residual protection, the Scotts GrubEx1 stands out for its long-lasting control. But each yard has different needs, so I’ve broken down the top five choices to help you decide.
★★★★☆
4.5/5
✔ Best overall pick for season-long protection
Comparison Chart of Best Lawn Grub Killer Bunnings
| Product | Details | Rating | Price | Buy |
|---|---|---|---|---|
Editor’s Choice
| ★★★★☆4.5/5 | $18.97 | ||
Top Pick
| ★★★★☆4.5/5 | $24.99 | ||
Best Budget
| ★★★★☆4.4/5 | $18.47 | ||
| ★★★★☆4.6/5 | $51.88 | ||
| ★★★★☆4.7/5 | $0.00 |
Prices and availability are accurate as of July 15, 2026 and are subject to change.
List of Top 5 Best Best Lawn Grub Killer Bunnings
I narrowed down the list after comparing active ingredients, coverage area, and how long each product stays effective. Buyer feedback from hundreds of verified users helped me separate the hype from the real results. Below are the list of products:
1. Scotts GrubEx1 Season Long Grub Killer
Scotts GrubEx1 is a granular formula that targets grubs before they hatch and stays active in the soil for up to four months. I found that its active ingredient, chlorantraniliprole, disrupts the grub’s muscle function without harming beneficial insects like earthworms. This makes it a solid choice for anyone who wants a single application per season.
4-month protection
5,000 sq ft
Chlorantraniliprole
Granular
Why I picked it
The GrubEx1 is the most reliable option for preventative control. It targets a wide range of grub species, including Japanese beetle and European chafer larvae, and the single application window means you can apply it in spring and forget it until fall. Verified buyer feedback consistently praises its effectiveness after just one watering.
Key specs
- Active ingredient: Chlorantraniliprole 0.2%
- Coverage: 5,000 sq. ft. per bag
- Duration: Up to 4 months of protection
- Form: Granules, applied with a broadcast spreader
Real-world experience
In our research, users who applied GrubEx1 in early May reported virtually no grub damage through August, even in areas with heavy beetle pressure. The granules need to be watered in within 24 hours to activate the barrier, but once that’s done, the product works silently. One reviewer with a 10,000 sq ft lawn used two bags and saw a 90% reduction in grub-related turf damage compared to the previous year.
- Single application lasts up to 4 months, saving you time and effort
- Targets grubs before they cause visible damage, so you see the benefit before the problem
- Safe for beneficial insects when used as directed, according to manufacturer data
- Works well with a spin spreader, coverage is even and easy to calibrate
- Does not kill existing grubs; it’s a preventative product that must be applied before eggs hatch
- Requires watering within 24 hours, which can be tricky if a dry spell hits
- ✔ You want to prevent grubs before they appear
- ✔ You have a medium to large lawn (up to 5,000 sq ft per bag)
- ✔ You prefer a single application that lasts all season
- ✖ You already have active grub damage and need a curative product
- ✖ Your lawn is smaller than 1,000 sq ft and you prefer a hose-end spray
The GrubEx1 is the best choice for homeowners who want a set-and-forget solution. If you apply it in early spring before soil temperatures reach 50°F, you’ll stop the next generation of grubs. It’s the most widely recommended option by university extension services, and the buyer feedback backs that up.
2. BioAdvanced Season Long Grub Control Granules
BioAdvanced takes a slightly different approach: it creates a protective zone in the soil that kills grubs as they move through. The 10-pound bag covers up to 5,000 square feet, and the active ingredient (imidacloprid) is well known for its residual action. I appreciate that it also tackles mole crickets and cinch bugs.
Imidacloprid
10 lb bag
5,000 sq ft
Granular
Why I picked it
BioAdvanced offers a dual-action formula that both kills existing grubs and prevents new ones. It’s especially effective against the larvae of Japanese beetles and June bugs. Verified buyer feedback highlights that it works well even when applied later in the season, giving you a bit more flexibility.
Key specs
- Active ingredient: Imidacloprid 0.2%
- Coverage: 5,000 sq. ft. per 10 lb bag
- Duration: Up to 3 months of protection
- Form: Granules, applied with a spreader
Real-world experience
Users report seeing dead grubs on the surface within a week after watering in the granules. One verified buyer with a 7,000 sq ft lawn applied it in late May and noticed a dramatic drop in skunk and raccoon digging, which are signs of grub activity. The product also suppressed mole crickets, which is a bonus for southern lawns.
- Kills a broad spectrum of lawn pests including mole crickets and cinch bugs
- Works as both a preventative and a curative, giving you a wider application window
- Easy to spread with a rotary spreader, and granules are fine enough to avoid clumping
- Good value for the coverage area, especially for larger lawns
- Imidacloprid may affect bee populations if applied when flowers are blooming, so timing is important
- Some users report the odor is strong right after application, though it fades quickly
- ✔ You need a product that works on multiple pest types, not just grubs
- ✔ You want flexibility to apply it later in the season if you missed the early window
- ✔ You have a mix of grubs, mole crickets, and chinch bugs in your lawn
- ✖ You have flowering weeds or clover in your lawn and want to protect pollinators
- ✖ You prefer a more targeted grub-only product to avoid broad-spectrum ingredients
BioAdvanced is a strong alternative if you’re dealing with a pest cocktail. The imidacloprid works quickly, but be mindful of nearby flowering plants. If you have a lawn with lots of clover, consider applying it after mowing to reduce exposure to bees.
3. Ortho BugClear Lawn Insect Killer1
Ortho BugClear is a budget-friendly granular option that covers a huge area: up to 33,000 sq ft with the 20 lb bag. It kills grubs, ants, spiders, ticks, fleas, and more, making it a versatile choice for homeowners who want to tackle multiple pests at once. The active ingredient is bifenthrin, a synthetic pyrethroid.
Bifenthrin
33,000 sq ft
20 lb bag
Broad-spectrum
Why I picked it
If you’re on a tight budget or have a very large lawn, Ortho BugClear gives you the most square footage per dollar. It’s a contact killer, meaning it works on contact with the insects, so it’s effective for both grubs and above-ground pests like ants and ticks. Verified buyer reviews consistently mention quick results.
Key specs
- Active ingredient: Bifenthrin 0.1%
- Coverage: 33,000 sq. ft. per 20 lb bag
- Duration: Up to 2 months of control
- Form: Granules, requires watering in
Real-world experience
Users with large properties (over an acre) love the coverage. One reviewer treated a 12,000 sq ft lawn and had leftover product for a second application. The granules are small and spread easily, but some buyers noted that the dust can be irritating if inhaled, so a mask is recommended.
The bifenthrin knocks down grubs quickly, but it doesn’t have the long residual of imidacloprid or chlorantraniliprole.
- Extremely high coverage per bag, ideal for large lawns
- Kills a wide range of insects including ants, ticks, and fleas, not just grubs
- Fast-acting contact killer, results visible within days
- Very affordable for the area treated
- Shorter residual control compared to other products, may need reapplication
- Not selective; can harm beneficial insects if applied carelessly
- ✔ You have a large lawn (over 10,000 sq ft) and need to cover it on a budget
- ✔ You want to control multiple pests in one go, not just grubs
- ✔ You need quick knockdown of an active infestation
- ✖ You want a single application that lasts all season
- ✖ You have a pollinator-friendly garden and want to avoid broad-spectrum pyrethroids
Ortho BugClear is the best choice for budget-conscious homeowners with large properties. Just keep in mind that its shorter residual means you might need a second application later in the season. It’s also a great option if you’re dealing with ticks and fleas along with grubs.
4. The Andersons DuoCide Professional-Grade Lawn Insect
The Andersons DuoCide is a professional-grade granular product that combines two active ingredients: bifenthrin and zeta-cypermethrin. This dual-action formula gives it both contact and residual activity. It covers 9,000 sq ft per 18 lb bag and is designed for tough infestations.
Dual active
9,000 sq ft
Professional-grade
18 lb bag
Why I picked it
DuoCide stands out for its potency. The combination of two pyrethroids provides a broader spectrum of control and helps fight resistance. It’s labeled for a huge list of pests including grubs, ants, fleas, ticks, and even spiders.
Verified buyer feedback from lawn care professionals toggles, with many using it for commercial properties.
Key specs
- Active ingredients: Bifenthrin 0.1% + Zeta-cypermethrin 0.05%
- Coverage: 9,000 sq. ft. per 18 lb bag
- Duration: Up to 2 months of residual control
- Form: Granules, requires watering in
Real-world experience
Users report that DuoCide is very effective on heavy infestations. One reviewer with a 5,000 sq ft lawn saw a complete elimination of grubs within 10 days, and the lawn recovered quickly. The granules are uniform and spread well with a broadcast spreader.
However, some users noted that the dust can be irritating, and the stronger smell compared to other products.
- Dual active ingredients provide more reliable control and reduce resistance risk
- Professional-grade formula that works on tough infestations
- Good coverage per bag for medium to large lawns
- Fast knockdown and decent residual activity
- Strong odor during application that some users find unpleasant
- More expensive per square foot than the Ortho BugClear
- ✔ You have a severe grub infestation that needs a strong punch
- ✔ You want a professional-grade product for a medium-sized lawn
- ✔ You’re dealing with multiple pest species and want broad coverage
- ✖ You are sensitive to strong chemical odors
- ✖ You need a product that lasts a full season without reapplication
DuoCide is the heavy hitter of the group. If