10 Best grub killer for vegetable garden in Canada

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Last Updated - 2025/05/11

Best Choice

01
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.
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9.8

Exceptional

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02
Nemaglobe

Environmental Factor 40 x 1 Million Beneficial Nematodes (S.Feltiae) Pot Popper Gnat & Thrip Control

Free Shipping

8.2 Simple to use

8.0 worth the money
Main highlights

Works on a variety of soil dwelling pests
Use on any container plant indoors, outdoors or in greenhouse
Exclusive non refrigerated nematode formulation
Easy to use slow release formulation, with no mixing required
6 month room temperature shelf life
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9.6

Exceptional

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Value for Money

03
Scotts

Ortho Slug B Gon Ready-to-Use Slug & Snail Bait, Large 1 kg Recloseable Bag, for Gardens, Granular Bait to Safely and Naturally Kill Slug and Snails
Main highlights

Provides immediate protection to garden plants
Ideal for all types of garden plants, including vegetable and flower gardens, ornamental shrubs, berry plants and fruit
Effectively creates a barrier to slugs and snails
Affected snails and slugs die within 3-6 days
Active Ingredient: 0.28% Iron (present as ferric phosphate)
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9.5

Excellent

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04
Killex

ORTHO KILLEX Lawn Weed Killer Concentrate, 1L

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9.3 Simple to use

8.7 worth the money
Main highlights

Won’t hurt your lawn!
Ortho Killex Concentrated formula provides maximum coverage for more widespread weed infestations
Mix 6 mL per litre of water to treat 5 square metres (50 square feet).
Herbicide pour la pelouse, Wipe Out Weeds effectively!
Controls over 50 different lawn weeds including dandelions, plantains, clover, ground ivy (creeping Charlie) and ragweed
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9.4

Excellent

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05
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.
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9.3

Excellent

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06
Safer's

Safer's 17-2110CAN Safer's 17-2110CAN BTK Caterpillar Killer 100mL Concentrate

9.7 Simple to use

9.1 worth the money
Main highlights

biological insecticide that controls caterpillars
Controls caterpillars including cabbage worm, tomato hornworm, tent caterpillars, gypsy moth, leafrollers, and other listed insects
Can be used on vegetables, fruit, trees, and ornamentals
Active Ingredient: Bacillus thuringiensis subsp. kurstaki, strain ABTS-51
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9.2

Excellent

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07
Nemaglobe

Nema Globe 4 x 5 Million Beneficial Nematodes

Free Shipping

8.7 Simple to use

8.0 worth the money
Main highlights

We do not recommend using/ordering the product when temperatures are below freezing.
Solution for gnats, whitefly, thrips and on a variety of fly larvae
Easy to apply with a watering can or hose-end sprayer for outdoor uses.
Can be used on all indoor house plants, tropical plants and any time you add or change potting soil.
Bee and Beneficial safe. Fungus gnat control nematodes are microscopic worms which seek out larval stages of various fly and other diptera insects which develop in the soil
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9.1

Excellent

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08
Safer's

Safer's Insecticidal Soap Ready-to-Use Spray 01-5057CAN6

Free Shipping

9.3 Simple to use

8.2 worth the money

8.2 Aroma
Main highlights

Use on houseplants, ornamental foliage plants, flowering plants, and fruits and vegetables
Kills aphids, mealy bugs, spider mites, whiteflies, and more
Insecticidal soap dries out the waxy outer skin of insects
Does not kill beneficial insects such as ladybugs, praying mantis and others when used as directed
Can be used up to the day of harvest
Apply every 7-10 days when insects are present
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9.0

Excellent

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09
Safer's

Safer's 01-5060CAN Tomato & Vegetable Insect Killer 1L Ready-to-Use Spray
Main highlights

Ready to use spray - no mixing required
Product dimensions: 27.31 inches (H) x 8.26 inches (L) x 12.07 inches (W)
One application lasts up to 10 days
1 Liter covers up to 70 square feet of plantings
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8.9

Very Good

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10
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.
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8.8

Very Good

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