10 Best insect killer for plants in Canada

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Last Updated - 2025/09/01

Best Choice

01
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

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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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9.8

Exceptional

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02
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

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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.
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9.7

Exceptional

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03
Safer's

Safer's 31-6025CAN End-All Miticide/Insecticide/Aracicide 1L Ready-to-Use Spray

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8.9 Simple to use

8.0 Aroma

8.0 worth the money
Main highlights

Kills aphids, whitefly, scale, spider mites, mealybugs, caterpillars, beetles, chinch bugs, and other listed insects
Fast-acting contact killer spray
Controls all stages of insects - eggs, nymphs, Adults
Active Ingredients: potassium salts of fatty acids 1%, pyrethrins 0.01%
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9.6

Exceptional

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Value for Money

04
Safer's

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

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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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9.5

Excellent

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05
Safer's

Safer's 3-in-1 Garden Spray 1L Ready-to-Use Spray 49-5470CAN6

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8.9 Simple to use

8.4 Easy to build

8.0 worth the money
Main highlights

Multi-purpose spray containing 3 garden solutions in 1
For use on roses, ornaments, beans, strawberries, grapes, currants, chrysanthemums, dahlias, and gooseberries
Controls powdery mildew, Black spot, rust, aphids, mealybugs, spider mites, whiteflies and many other listed pests
Active Ingredients: potassium salts of fatty acids 0.75%; sulphur 0.4%
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9.4

Excellent

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06
Doktor Doom

Doktor Doom PM 0.025 Thrip Killer Plus, 1L

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Main highlights

Use on home vegetable gardens, fruit trees, ornamentals & flowers.
Made in Canada
Keep out of reach of children
Fall Webworm, Forest Tent Caterpillar, Greenfruit Worm, Grape Berry Moth, Grape Leaf Hopper, Gypsy Moth, Oblique-banded Leafroller, Leafminers, Open Feeding Sawfly, Oriental Fruit Moth, Pear Psylla (nymphs and adults), Plum Curculio, Potato Flea Beetle, Potato Leafhopper, Red Banded Leafroller, Spotted Tentiform Leafminer, Spruce Budworm, Tarnished Plant Bug, Whiteflies, White Marked Tussock Moth, Winter Moth, and Yellow Headed Spruce Sawfly.
Controls Aphids, Imported Cabbage Worm, Cabbage Looper, Codling Moth, Colorado Potato Beetle, Climbing Cut Worm, Cornworm, Corn Earworm, Corn Sap Beetles, Crucifer Beetle, Diamondback Moth Larvae, Douglas-fir Tussock Moth, Eastern Tent Caterpillar, Euonymus Webworm, European Corn Borer, Eye-Spotted Budmoth, Exposed Thrips,
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9.2

Excellent

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07
Doktor Doom

Doktor Doom PM 50™ Concentrate Insect Killer for Fruit Trees, Vegetables and Ornamental Plants Concentrate, 1L

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Main highlights

No conspicuous odour
Made in Canada
For best results read label before use
Control listed pests on fruits, vegetables and ornamentals grown outdoors
0.50% Permethrin provides residual control of listed insects
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8.9

Very Good

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08
Safer's

Safer's 31-6035CAN End-All Miticide/Insecticide/Aracicide 500ml Concentrate

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9.1 Simple to use

8.7 worth the money

8.7 Attachment
Main highlights

Kills aphids, whitefly, scale, spider mites, mealybugs, caterpillars, beetles, chinch bugs, and other listed insects
Fast-acting contact killer
Controls all stages of insects – eggs, nymphs, adults
Active Ingredients: Potassium Salts of Fatty Acids 20%, Pyrethrins 0.2%
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8.6

Very Good

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09
Safer's

Safer's 01-2022CAN Insecticidal Soap 500ml Concentrate Insect Killer - Kills Aphids, Mealybugs, Spider Mites, Whitefly, Soft Brown Scale, Psyllids, Rose Or Pear Slugs, Earwigs, and Elm Leafminer

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8.7 Attachment

8.7 Simple to use

8.0 worth the money
Main highlights

Weakened insects protective outer shell so they dehydrate and die
For use on vegetables, fruits, shrubs, trees, and greenhouse plantings
Controls aphids, mealybugs, spider mites, whitefly, soft brown scale, psyllids, Rose or pear slugs, earwigs, and Elm leafminer
Active ingredient: potassium salts of fatty acids 50. 5%
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8.4

Good

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10
LJHYCYHT

LJHYCYHT 40PCS Fruit Fly Traps Yellow Sticky Traps Fungus Gnat Traps Insect Bug Traps Used to Catch whiteflies, Mosquitoes, Fungus Mosquitoes, Flying Insects and Protect Plants.

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Main highlights

YELLOW STICKY TRAPS -- fly strips makes use of the yellowing of pests, made of special scientific spectra, double-sided baiting, Note: Bright plants make the product less attractive to flying insects
SAFE AND NON-TOXIC-- Gnat killer traps use bright colors and glue to catch pests, odorless and harmful drugs, no harm to people and pets.
MULTIPLE SCENARIOS USE: Specially designed to catch flying plant pests. Suitable for outdoor or indoor plants, Captures a variety of flying insects such as whiteflies, mosquitoes, fungus mosquitoes
LONG LASTING-- Yellow sticky fruit fly traps with a upgraded strong adhesive so they are UV resistant and waterproof. Not need to replace them until fully covered with bugs.
EASY TO USE-- Reserved non-adhesive part, gnat trap easy to peel off, won't stick to your hands. Sharp bottom easy to insert into flower pots , suitable for home potted plants, home kitchen or garden
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8.1

Good

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