10 Best grub killer for lawns in Canada

Advertising Disclosure

Last Updated - 2025/07/20

Best Choice

01

Neudorff

Fiesta Weed Killer

Free Shipping

8.9 Simple to use

8.0 worth the money

9.9

Exceptional
Curious about how we select the top products for you? Explore How It Works

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service levels, popularity trends, and more. The rankings reflect our opinion and should be a good starting point for shopping. By purchasing the products we rank, you’ll get the lowest price we found while we may receive a commission at no cost to you, which will help us continue to provide you with value.
02
The Grub Grenade

Grub Grenade - Beneficial Predatory Soil Mites - Natural Predators of Fungus gnats, Thrips pupae, diapaused Spider mite, Root aphids, nematodes, phoretic Mites, and More! (20000+ mites/800-2000sqft)

9.1 Simple to use

8.0 worth the money
Main highlights

PLEASE NOTE!: If your local forecast is for near or below freezing, or hotter than 25C,, your order will be shipped as "Card for Pick-up" which means you will need to pick it up from the local Canada Post location.
One Application for Multiple Year or Lifetime Control
Not recommended for fast control of a severe fungus gnat infestation. Use preventatively or to cure healthy plants with a minor fungus gnat infestation. Use beneficial nematodes for a fast knockdown and follow up with these mites to give lasting control and protection. If using these mites to cure an established fungus gnat infestation, it can take up to 6 weeks to eliminate the fungus gnats.
Fresh -- Use as soon as possible! Do not store or refrigerate! Order as required. Produced From Canada's Largest Beneficial Insect and Mite Producer. No Hassle Application -- Just Open End and Sprinkle on Target Area
Controls Fungus Gnats, Pupating Thrips, Root Weevils, Root Aphids, Pathogenic Nematodes, and many more.
Show more
9.8

Exceptional

Show more
Value for Money

03
Scotts

Scotts 10003 Lawn Response 9-1-1 4.8Kg

10% Off Free Shipping

8.2 Simple to use

8.0 worth the money
Main highlights

Soil enhancers help improve soil structure, use of water and nutrients
Package dimension value is 40.63cm h x 10.15cm l x 25.39cm w
Organic and slow-release fertilizers deliver deep green colour, improve seed establishment and rooting
High-performance grass seed promotes durable, thick turf that helps crowd out weeds
Show more
9.7

Exceptional

Show more
04
The Grub Grenade

5000 (5000)
Main highlights

PLEASE NOTE!: If your local forecast is for near or below freezing, or hotter than 25C,, your order will be shipped as "Card for Pick-up" which means you will need to pick it up from the local Canada Post location.
One Application for Multiple Year or Lifetime Control
Not recommended for fast control of a severe fungus gnat infestation. Use preventatively or to cure healthy plants with a minor fungus gnat infestation. To remedy a severe fungus gnat infestation, use alongside beneficial nematodes and sticky traps for a fast knockdown, then follow up with these mites to give lasting control and protection. Using these alone to cure an established fungus gnat infestation can take upwards of 1 month.
Fresh -- Use as soon as possible! Do not store or refrigerate! Order as required. Produced From Canada's Largest Beneficial Insect and Mite Producer. No Hassle Application -- Just Open End and Sprinkle on Target Area
Controls Fungus Gnats, Pupating Thrips, Root Weevils, Root Aphids, Pathogenic Nematodes, and many more.
Show more
9.6

Exceptional

Show more
05
Happy Hen Treats

Grub Frenzy 30 oz Black Solider Fly Larvae - Mealworm Alternative Made in Canada

Free Shipping

8.2 worth the money

8.0 Taste
Main highlights

RESEALABLE BAG - Heavy duty zip top bag makes storage easy
PROTEIN PACKED - Nutrient rich BSFL provide a high protein boost.
CANADIAN GROWN - Black Solider Fly Larva raised & packed in Canada
CALCIUM RICH - Higher in calcium than mealworms.
100% NATURAL - Non-GMO. No additives, preservatives or fillers.
Show more
9.5

Excellent

Show more
06
OnGuard

OnGuard Pro-Perm Insect Killer 3.78L | Bed Bug Spray | Fast Action, Residual (24/7), Non-Flammable, Water-Based Solution | 0.35% Permethrin | Ants, Bedbugs, Spiders, Cockroaches, Ticks, Fleas

Free Shipping

8.7 Simple to use

8.0 Attachment

8.0 worth the money
Main highlights

TRIGGER SPRAYER NOT INCLUDED. READY TO USE: No mixing required.
Provides long-lasting indoor and outdoor control against crawling and flying insects, including ants, bedbugs, brown dog ticks, clothes moths, cockroaches, crickets, earwigs, fleas, house flies and spiders for up to 60 days.
GOOD QUALITY: Made in Canada. Health Canada Pest Control Product Registration Number 32333
Controls aphids and whiteflies on indoor ornamental plants
COMPOSITION: Contains of 0.35% Permethrin and sodium benzoate at 0.1% as a preservative. Also contains D-Limonene and Lemongrass fragrance.
Show more
9.4

Excellent

Show more
07
Scotts

Scotts Turf Builder Green MAX Lawn Food - 5.7kg - 350m2 (3,767ft2)

Free Shipping

9.3 Simple to use

8.0 worth the money
Main highlights

Promotes fast, deep greening in 3 days.
Guaranteed not to stain
For all grass types, including newly seeded and sodded areas
5.7 kg (12.6 lb) package covers up to 350 m2 (3,767 ft2)
2-in-1 formula combines nourishing lawn food with a 5% iron supplement
Show more
9.1

Excellent

Show more
08
BIOPROTEC

BIOPROTEC 31-133 Nematodes Sprayer

Free Shipping
Main highlights

Specially designed for a beter distribution of the nematodes on your lawn
Prevent clogging inside the sprayer
Biological Phytosanitary Protection
Show more
8.9

Very Good

Show more
09
Generic

Ready-to-Use Lawn Weed Control, with Wand Applicator, 4-L

Free Shipping
Main highlights

Won’t harm your grass
Suitable for controlling weeds in large areas
Covers 250 sq. m
Convenient Pull ‘n Spray Applicator
Controls over 50 different lawn weeds, including dandelions, plantains, clover, creeping charlie and ragweed
4 L (1.06 gallon) format is ideal for larger areas, and is an easy way to control lawn weeds
Show more
8.7

Very Good

Show more
10
KNOCK DOWN

Knock Down - Diatomaceous Earth Insect Killer, Flea, Ant, Silverfish, Bed Bug Killer and Cockroach Killer Indoor and Outdoor Use, Food Grade Diatomaceous Earth Powder with Bait, 300g

Free Shipping

8.0 Simple to use

8.0 worth the money

8.0 Taste
Main highlights

SAFE FOR YOUR HOME: Made from food-grade freshwater diatomaceous earth (DE), this silverfish killer is safe for use around humans and pets. Our bed bug powder provides effective pest control without harsh chemicals, making it a natural choice for your home and garden.
MESS-FREE APPLICATION: The convenient shaker-top container makes it simple to apply the cockroach killer powder exactly where it’s needed. This odorless, non-staining insecticide powder won’t leave behind messy residues, making it a discreet solution for long-term pest control.
LONG-LASTING PROTECTION: Once applied, this powerful diatomaceous earth bed bug killer continues working long after initial use, forming a protective barrier against pests. Reapply in high-traffic areas as needed to maintain a pest-free environment indoors and outdoors.
INDOOR AND OUTDOOR USE: Designed for maximum flexibility, this diatomaceous earth food grade powder can be used both dry and wet, depending on the application. Use our cockroach powder inside your home to treat baseboards and carpets or apply it outdoors in gardens and patios.
FAST AND EFFECTIVE INSECT CONTROL: This natural diatomaceous earth insect killer works to eliminate bed bugs, fleas, ants, silverfish, cockroaches, and more. The dual-action diatomaceous earth powder dehydrates pests externally and damages their digestive systems internally for rapid results.
Show more
8.6

Very Good

Show more