10 Best Trichlorfon Grub Killers (November 2026)

Shoppers searching for a trichlorfon grub killer usually want a fast, curative product for turf that is already thinning because grubs are feeding on the roots. The trouble is that lawn insecticides are built for very different jobs. A preventive granule applied in spring does nothing for a lawn that is already peeling back like carpet, a fungicide will not touch a single grub, and a garden dust or a mound treatment solves a problem that may not be yours at all. The Best Trichlorfon Grub Killers depend on the active ingredient, the application window and whether you are treating a whole lawn or a specific pest.

One point up front: trichlorfon is not the named active ingredient of any product in this round-up. What follows are the closest practical alternatives sold for lawns and landscapes, plus a few specialist products that cover pests grub killers do not.

The short answer: the Ortho Orthene Fire Ant Killer suits yards with visible fire ant mounds, the Scotts GrubEx Season Long is the preventive grub option for a 5,000 sq ft lawn, and the BASF Alpine WSG suits buyers who want a low-odor, mix-it-yourself insecticide for in and around the house. The rest of the list covers systemic granules, bifenthrin concentrates, a garden dust, a large-plot lawn spray and two lawn fungicides.

TL;DR: top picks at a glance

• Best overall: the Ortho Orthene Fire Ant Killer, a 14 oz powder that treats up to 189 mounds and starts working in 60 minutes.
• Best for grub prevention: Scotts GrubEx Season Long, one 14.35 lb bag covers 5,000 sq ft and protects for up to 4 months.
• Best for indoor and outdoor use: BASF Alpine WSG, five 0.35 oz packets, each making 1 gallon of spray for 1,000 sq ft.
• Best for ornamental plants: Bonide Systemic Granules, a 4 lb root-absorbed treatment with protection for up to 8 weeks.

Best Trichlorfon Grub Killers Comparison (November 2026)

#	Product	Best for	Form	Coverage	Active Ingredient
1	Ortho Orthene Fire Ant Killer	Fire ant mounds	Powder	Up to 189 mounds	Not listed
2	Scotts GrubEx Season Long	Grub prevention	Granules	5,000 sq ft	Chlorantraniliprole
3	BASF Alpine WSG	Indoor-outdoor pests	Water-soluble granules	1,000 sq ft per packet	Dinotefuran 40%
4	Bonide Systemic Granules	Ornamental plants	Granules	Not listed	Imidacloprid
5	Scotts DiseaseEx Fungicide	Lawn disease	Granules	5,000 sq ft	Not listed
6	Quali-Pro Bifenthrin I/T 7.9 F	Residual perimeter control	Liquid concentrate	Not listed	Bifenthrin
7	Atticus Talak 7.9% Bifenthrin	Broad-spectrum concentrate	Liquid concentrate	Not listed	Bifenthrin 7.9%
8	Sevin Insect Killer Dust	Garden spot treatment	Dust	Not listed	Not listed
9	Spectracide Triazicide Concentrate	Large-plot lawns	Liquid concentrate	64,000 sq ft	Not listed
10	BioAdvanced Lawn Fungus Control	Systemic lawn fungicide	Granules	5,000 sq ft	Not listed

1. Ortho Orthene Fire Ant Killer: Best Powder Mound Treatment for Fire Ant Yards

• Form: Powder
• Size: 14 oz (0.875 lb)
• Coverage: Up to 189 mounds per bottle
• Speed: Begins killing in 60 minutes
• Active ingredient: Not listed

Pros:

• The 14 oz bottle treats up to 189 individual mounds, so one purchase stretches across a heavily infested yard.
• It begins working in about 60 minutes, which is quick enough to clear mounds before a weekend of yard use.
• No watering-in is needed, so it can be sprinkled straight onto each mound.
• It is designed to reach the queen, which targets the colony at its source rather than the surface workers.

Cons:

• It is a mound treatment only, so it does nothing for grubs, armyworms or other turf pests.
• The 0.875 lb bottle is easy to dose by mound but impractical for treating an entire lawn.
• Longer-term prevention depends on a separate broadcast granule that is sold separately.

Best for: Homeowners with scattered fire ant mounds on a lawn or around shrubs who want fast, targeted removal.

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The Ortho Orthene is the most focused product in this list. Where the Scotts GrubEx Season Long is spread across a whole lawn, this powder goes on one mound at a time, which keeps the amount used low and the cost per treated mound small. Its listed use covers lawns and areas around flowers, trees and shrubs.

The system works best as a two-step approach. Destroy the existing mounds with this bottle, then follow with a broadcast fire ant granule (sold separately) to stop new mounds from forming for up to 6 months. That second step is not included, so budget for it if the infestation is widespread.

It is the wrong choice for a lawn with brown, spongy turf that lifts easily, because that pattern points to grubs. In that case the Scotts GrubEx Season Long is the better fit, and the Spectracide Triazicide Concentrate covers a wider range of surface pests.

2. Scotts GrubEx Season Long: Best Granular Grub Preventer for 5,000 Sq Ft Lawns

• Form: Granules
• Size: 14.35 lb bag
• Coverage: 5,000 sq ft
• Protection: Up to 4 months from one application
• Active ingredient: Chlorantraniliprole

Pros:

• A single application kills and prevents grubs for up to 4 months, which removes the need for repeat visits.
• It targets grubs when they are young, before they cause visible turf damage.
• It also controls armyworms, chinch bugs and May/June beetles, so it covers several lawn pests in one pass.
• Annual use can help control Japanese beetle infestations over time.

Cons:

• It is a preventive and young-grub product, so it is a weaker fit for a lawn already badly damaged by mature grubs.
• Timing matters: it is meant for a dry lawn in spring or early summer, which narrows the useful window.
• The 14.35 lb bag is bulky to store for a lawn smaller than 5,000 sq ft.

Best for: Homeowners with a lawn of about 5,000 sq ft who want to stop grubs before they start.

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This is the only product here sold specifically as a grub killer, and it is the closest match to what a reader searching for a trichlorfon product is trying to solve. The difference is the approach. Trichlorfon is typically reached for once damage is visible, while GrubEx works by killing grubs as they develop, with up to 4 months of protection from one pass.

That makes timing the deciding factor. Apply it to a dry lawn in spring or early summer, and the protection runs through the period when young grubs hatch and begin feeding. Coverage is a clear 5,000 sq ft per bag, the same figure as the Scotts DiseaseEx Fungicide and the BioAdvanced Lawn Fungus Control, so a lawn treated for grubs and disease needs two separate products of similar size.

It is the wrong pick if the goal is a mound or garden spot treatment. The Ortho Orthene Fire Ant Killer handles mounds directly, and the Sevin Insect Killer Dust suits flower beds.

3. BASF Alpine WSG: Best Water-Soluble Granule Insecticide for Indoor and Outdoor Use

• Form: Water-soluble granules
• Size: Five 0.35 oz packets
• Coverage: Each packet makes 1 gallon, treating 1,000 sq ft
• Active ingredient: Dinotefuran 40%
• Type: Non-pyrethroid, non-repellent

Pros:

• Each packet mixes into 1 gallon of clear solution, so you can prepare only what a small job needs.
• It is usable indoors and out, from kitchens and garages to foundations, patios and animal pens.
• The non-repellent formula supports ant control with transfer properties, spreading the active through a colony.
• It is odorless and non-staining when used as intended, and users describe it as easy to mix.

Cons:

• The five packets cover 5,000 sq ft at most, and each packet must be mixed and sprayed separately.
• It must be applied with care around bees, butterflies and other pollinators.
• Opinions on value are mixed among buyers.

Best for: Households that want a single low-odor insecticide for ants, cockroaches and similar pests across both indoor and outdoor spaces.

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The Alpine WSG stands apart because it is a different chemistry from the bifenthrin concentrates. Dinotefuran is a non-pyrethroid, so it appeals to buyers who want something other than the pyrethroid class that the Atticus Talak 7.9% Bifenthrin and Quali-Pro Bifenthrin I/T 7.9 F belong to. Feedback highlights its effectiveness on German cockroaches in particular.

The packet format also changes how you buy. Rather than storing a full gallon of concentrate, you keep five small sachets and mix one gallon at a time. That suits occasional use but costs more effort for a large yard, where the Spectracide Triazicide Concentrate and its 64,000 sq ft coverage are a better match.

Grubs are not among its listed targets, so it is the wrong choice for turf damage. Choose the Scotts GrubEx Season Long for that.

4. Bonide Systemic Granules: Best Root-Absorbed Granule for Ornamental Plant Pests

• Form: Granules
• Size: 4 lbs
• Protection: Up to 8 weeks
• Active ingredient: Imidacloprid
• Use: Outdoor ornamental plants, not edibles

Pros:

• Protection lasts up to 8 weeks because the plant absorbs the granules through its roots.
• The treatment will not wash away with rain or watering.
• It controls insects such as mealybugs, aphids and scale through ingestion.
• It arrives ready to use and is low odor.

Cons:

• It is not intended for herbs, vegetables or fruit-bearing plants.
• Coverage per bag is not specified, which makes planning larger beds harder.
• It needs to be mixed into the soil and watered in, then reapplied every 8 weeks as needed.

Best for: Gardeners protecting flowering shrubs and ornamentals from sap-feeding insects.

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The Bonide is a plant-protection product, not a lawn treatment. It works from inside the plant, which is a fundamentally different delivery method from the surface spray of the Spectracide Triazicide Concentrate or the dust of the Sevin Insect Killer Dust. Because it acts only on insects that feed on the plant, it does not harm insects that never touch it.

Before treating soil beds, a soil pH tester is a useful step, since root uptake depends on healthy, well-conditioned soil. If the target is a vegetable garden, skip this product and use the Sevin dust instead, which is aimed at garden plants.

5. Scotts DiseaseEx Fungicide: Best 10 lb Granular Fungicide for Brown Patch Control

• Form: Granules
• Size: 10 lb bag
• Coverage: 5,000 sq ft
• Diseases controlled: 26 listed lawn diseases
• Duration: Up to 4 weeks

Pros:

• It controls 26 listed diseases, including brown patch, pythium blight, red thread and anthracnose.
• It starts working within 24 hours of application.
• Control lasts up to 4 weeks, matching the coverage window of the BioAdvanced alternative.
• It is safe for all grass types when used as directed.

Cons:

• It is a fungicide and will not kill grubs or other insects.
• Best results require starting before symptoms appear or when conditions favor disease.
• The 4-week window means repeated applications through a humid season.

Best for: Lawn owners whose brown patches are caused by disease rather than insects.

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A fungicide has no place in a search for a grub killer unless the diagnosis is uncertain. Brown patches in summer can come from either fungus or grubs, and DiseaseEx is the right product when the cause is disease. If turf pulls up like a mat with no roots, use the Scotts GrubEx Season Long instead.

Against the BioAdvanced Lawn Fungus Control, DiseaseEx lists a longer roster of 26 diseases and the same 5,000 sq ft coverage per 10 lb bag. The BioAdvanced is systemic and rainproof, while DiseaseEx emphasizes speed, working within 24 hours.

6. Quali-Pro Bifenthrin I/T 7.9 F: Best Unscented Bifenthrin Concentrate for Residual Control

• Form: Liquid concentrate
• Size: 1 gallon
• Active ingredient: Bifenthrin
• Targets named: Termites, carpenter ants
• Coverage: Not listed

Pros:

• The formulation is described as non-irritating with no odor and dries with no visible residue.
• It has no known phytotoxicity, so it is gentler on plants than many solvent-based sprays.
• It is compatible with herbicides, fungicides, insecticides and liquid fertilizers.
• The gallon size gives long-term supply for repeated perimeter treatments.

Cons:

• Application rates and coverage are not specified, so you rely on the product label for dosing.
• It requires dilution and a sprayer, which adds equipment compared with ready-to-use granules.
• Grubs are not among its named targets.

Best for: Experienced users who want a plain, no-frills bifenthrin concentrate for ant and termite work.

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The Quali-Pro is the plainer sibling of the Atticus Talak 7.9% Bifenthrin. Both are bifenthrin concentrates sold in 1 gallon bottles, but Atticus adds a pre-marked pour bottle, a longer pest list and a stated 3 months of control, while the Quali-Pro states fewer details.

Its tank-mix compatibility is the standout feature. If you already run a lawn fertilizer or herbicide program through a sprayer, adding this saves a pass. For a first-time buyer without a sprayer, the Bonide Systemic Granules or the Sevin Insect Killer Dust are simpler.

7. Atticus Talak 7.9% Bifenthrin: Best Measured-Pour Bifenthrin Concentrate for Broad Pest Lists

• Form: Liquid concentrate
• Size: 128 fl oz (1 gallon)
• Active ingredient: Bifenthrin 7.9%
• Control period: Up to 3 months
• Pests listed: More than 75, including ants, ticks, spiders, mosquitoes and armyworms

Pros:

• It kills on contact and lasts up to 3 months, the longest stated residual among the liquid concentrates here.
• The water-based formula dries clear, leaves no residue and is odor-free.
• It works indoors and outdoors, from lawns and hardscape cracks to baseboards and window frames.
• The pre-marked Tip 'N Measure bottle makes pouring small amounts easier.

Cons:

• It is not available for sale in Connecticut, New York or Vermont.
• Coverage per gallon is not specified, so dosing depends on the label.
• It targets surface and crawling pests, and grubs are not named.

Best for: Homeowners who want one bifenthrin concentrate for both house perimeters and landscaped areas.

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The Talak is the more versatile of the two bifenthrin options. Armyworms appear on its list, which overlaps with the Scotts GrubEx Season Long, and it can also be used as a mound drench for fire ants, which overlaps with the Ortho Orthene Fire Ant Killer.

Re-entry is simple: once sprays dry completely, people and pets can return. That makes it a more flexible tool than the dust or granule products. If you need lawn-scale coverage with a published area figure, the Spectracide Triazicide Concentrate states 64,000 sq ft per gallon, which this product does not.

8. Sevin Insect Killer Dust: Best Shake-On Dust for Garden Beds and Flower Borders

• Form: Dust
• Size: 3 lb
• Targets: Over 150 listed insects, including ants, Japanese beetles, whiteflies and aphids
• Action: Kills by contact
• Active ingredient: Not listed

Pros:

• It is ready to use: shake it on and no mixing or sprayer is required.
• It kills by contact across more than 150 listed insects.
• The dust will not harm plants or blooms when used as directed.
• People and pets can return once the dust has settled.

Cons:

• Dust is easy to misapply in wind, and it is not suited to treating a full lawn.
• Coverage per container is not specified.
• Grubs, which live in the soil, are not among the targets named.

Best for: Gardeners who need a quick contact treatment on flowers and garden plants.

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The Sevin dust is about speed and simplicity. The Bonide Systemic Granules work over weeks from within the plant, while this works on contact the moment insects are hit. That makes it better for sudden outbreaks and worse for long-term protection.

For lawn-scale work, it is the wrong tool, because a 3 lb container cannot match the area covered by the Scotts GrubEx Season Long or the Spectracide Triazicide Concentrate. Apply early or at the first signs of damage for the best results.

9. Spectracide Triazicide Concentrate: Best 1 Gallon Concentrate for Large-Plot Lawn Coverage

• Form: Liquid concentrate
• Size: 128 fl oz (1 gallon)
• Coverage: Up to 64,000 sq ft
• Control period: Up to 2 months
• Targets: 180+ pests on contact, including ants, aphids, mosquitoes, fleas, deer ticks and Japanese beetles

Pros:

• One gallon treats up to 64,000 sq ft, by far the largest coverage figure in this list.
• It kills 180+ pests on contact and protects for up to 2 months.
• It suits lawns, landscapes, vegetable and flower gardens, trees and shrubs.
• It mixes easily in a sprayer, and buyers also find it handy for ants and garden pests such as aphids.

Cons:

• A tank sprayer is required and is sold separately.
• Feedback on effectiveness and shelf life is mixed, with some users finding it does not last as long as stated.
• Odor feedback is mixed.

Best for: Owners of large lawns and landscapes who need broad surface-pest control from one container.

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The Spectracide offers the best coverage per container here. At 64,000 sq ft per gallon, it dwarfs the 5,000 sq ft figure of each Scotts and BioAdvanced bag. That scale is what makes it the practical choice for acreage.

Its pest list includes mosquitoes and ticks, so it pairs naturally with passive control such as solar powered bug zappers around patios. It does not list grubs, so for turf damage from root-feeding larvae, return to the Scotts GrubEx Season Long.

10. BioAdvanced Lawn Fungus Control: Best Rainproof Systemic Fungicide for Red Thread and Dollar Spot

• Form: Granules
• Size: 10 lb
• Coverage: 5,000 sq ft claimed
• Protection: Up to 30 days
• Diseases: Red thread, anthracnose, brown patch, dollar spot, gray snow mold, powdery mildew and others

Pros:

• The systemic formula is absorbed by the grass, so protection will not wash off in rain.
• It controls a long list of diseases, including red thread, dollar spot and fusarium patch.
• It can be used on all lawn types.
• Buyers describe it as easy to use, including simple hose attachment.

Cons:

• It is a fungicide and does nothing against grubs.
• The most common complaint is that real-world coverage falls well short of the stated 5,000 sq ft.
• Value feedback is mixed.

Best for: Lawn owners who want rainproof disease protection and have a smaller area to treat.

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The BioAdvanced is the last pick because its coverage concerns and its fungicide role put it furthest from a grub-killing search. It is still useful when turf damage comes from disease, and a Ready-to-Spray version of the same product is also sold for buyers who prefer a hose-end format.

Compared with the Scotts DiseaseEx Fungicide, the main trade is a systemic, rainproof action against DiseaseEx's longer disease list and 24-hour start. If coverage accuracy matters, DiseaseEx is the safer buy.

Buyer's Guide: How to Choose the Right Trichlorfon Grub Killer

The core trade-off is between curative speed and preventive timing. Trichlorfon is associated with treating grubs that are already feeding, while products such as the Scotts GrubEx Season Long stop grubs earlier in the season. Everything else in this list serves a neighboring need.

Before choosing, check these project details:

• Pest identity: Confirm whether the damage comes from grubs, surface insects, ants or disease.
• Timing: Match the product to the season, since GrubEx is applied in spring or early summer.
• Area size: Compare the lawn's square footage with the coverage figure, from 5,000 sq ft for granules to 64,000 sq ft for the Spectracide.
• Application method: Decide between shake-on, granule spreader or tank sprayer.
• Plant and pet safety: Check edible plants, pollinators and re-entry instructions on the label.

Active Ingredient and Mode of Action

The active ingredient sets what a product can do. Chlorantraniliprole in the Scotts GrubEx Season Long targets young grubs, dinotefuran in the BASF Alpine WSG is a non-pyrethroid, imidacloprid in the Bonide Systemic Granules moves through plants, and bifenthrin in the Atticus Talak 7.9% Bifenthrin and Quali-Pro Bifenthrin I/T 7.9 F is a contact and residual pyrethroid.

Several products here do not state an active ingredient, including the Sevin Insect Killer Dust and the Spectracide Triazicide Concentrate. In those cases, rely on the label to confirm what is in the container.

Product Form and Application Method

Granules such as the Scotts and BioAdvanced bags spread with a lawn spreader and suit whole-lawn jobs. Powders like the Ortho Orthene Fire Ant Killer go on individual mounds, and dusts like Sevin are shaken onto plants.

Concentrates need a sprayer. The Spectracide Triazicide Concentrate requires a tank sprayer sold separately, while the BASF packets mix one gallon at a time. Trim edges and long grass first with a gas string trimmer so granules and sprays reach the soil surface evenly.

Coverage and Dosing

Coverage figures vary widely. The Scotts and BioAdvanced bags state 5,000 sq ft, each BASF packet covers 1,000 sq ft, and the Spectracide covers 64,000 sq ft per gallon. The Ortho bottle uses a different unit, up to 189 mounds.

Where coverage is not listed, as with the Bonide, Quali-Pro, Atticus and Sevin products, plan your purchase from the label rates and not from container size alone.

Target Pest and Timing

Prevention products need to go down before pests hatch, while contact products work when insects are present. GrubEx suits the first approach and the Sevin dust suits the second.

Residual periods range from about 30 days for the fungicides to 8 weeks for Bonide, 2 months for Spectracide, 3 months for Atticus and 4 months for GrubEx. Longer protection reduces repeat applications.

Frequently Asked Questions About Trichlorfon Grub Killers

Is Any Product Here a True Trichlorfon Grub Killer?

No product in this round-up is named as a trichlorfon formula. The closest dedicated grub option is the Scotts GrubEx Season Long, which uses chlorantraniliprole. Always check the label of any product for its active ingredient before you buy.

When Should I Apply a Grub Killer?

The Scotts GrubEx Season Long is meant for a dry lawn in spring or early summer, so young grubs are killed as they develop. One application protects for up to 4 months. Applying later in the season misses much of that preventive benefit.

Can a Fungicide Kill Grubs?

No. The Scotts DiseaseEx Fungicide and the BioAdvanced Lawn Fungus Control control lawn diseases and do not target insects. If your lawn has brown patches, confirm whether the cause is fungus or grubs before choosing.

Which Product Covers the Largest Lawn?

The Spectracide Triazicide Concentrate treats up to 64,000 sq ft per gallon, the largest stated area here. It needs a tank sprayer, which is sold separately. For smaller 5,000 sq ft lawns, the Scotts granules are simpler.

Are Any of These Safe for Vegetable Gardens?

The Bonide Systemic Granules are not intended for herbs, vegetables or fruit-bearing plants. The Sevin Insect Killer Dust and the Spectracide Triazicide Concentrate list gardens among their uses. Follow label directions for edibles in every case.

What Is the Best Option for Fire Ants?

The Ortho Orthene Fire Ant Killer treats up to 189 mounds and starts working in 60 minutes. The Atticus Talak 7.9% Bifenthrin can also be used as a mound drench. For lasting prevention after mound treatment, add a broadcast fire ant granule.

Final Verdict: Which Trichlorfon Grub Killer Should You Buy?

Best Trichlorfon Grub Killers for most yards start with Ortho Orthene Fire Ant Killer: a 14 oz powder that treats up to 189 mounds, begins working in 60 minutes and needs no watering-in. Its main weakness is scope, since it handles ants only and does nothing for grubs or other lawn pests.

For the actual grub problem, the Scotts GrubEx Season Long is the stronger pick, with 5,000 sq ft coverage per 14.35 lb bag and up to 4 months of protection. For mixed household pests, the BASF Alpine WSG offers a non-pyrethroid option in packets that each treat 1,000 sq ft. The Spectracide Triazicide Concentrate wins on scale at 64,000 sq ft per gallon.

The specialist picks fill narrower roles. The Bonide Systemic Granules protect ornamentals for up to 8 weeks, the Sevin Insect Killer Dust suits garden spot treatments, the two bifenthrin concentrates cover perimeters and landscapes, and the Scotts DiseaseEx Fungicide and BioAdvanced Lawn Fungus Control are for disease only. If you are still undecided, identify whether the damage is grubs, surface insects or fungus first, then pick the product built for that cause.