10 Best bt sprays of 2025

Save up to 49% off

Best Choice

1

Monterey

Monterey - B.t. Bacillus Thuringiensis Bundled with Garden Measuring Spoon - Ready to Spray Worm & Caterpillar Killer Insecticide, OMRI Listed - 32 oz
9.9

Exceptional

Our Rating
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Value for Money

2

Summit
SUMMIT 021-6 Caterpillar and Webworm Control-Hose End For Insects, 1-, Quart, White
Main highlights

Effective Pest Control
Summit 021-6 effectively targets caterpillars and webworms, protecting your outdoor spaces with ease.

Ideal for Tall Trees
Perfect for treating tall trees and hard-to-reach areas in your yard.

Highly Recommended by Users
Praised for its effectiveness in eliminating pests, especially bagworms and caterpillars.
Key specs
- application method:Spray
- operation mode:Hose-end ready to spray
- target species:N/A
- material:N/A
- power source:N/A
9.6

Exceptional

Our Rating

8.2
Simple to use

8.0
worth the money
3

Bonide
Bonide 8066 Captain Jack's Bacillus Thuringiensis BT Organic Worm & Caterpillar Control, 32 oz. Ready-to-Us - Quantity 1
Main highlights

Key Features and Benefits
Controls various worms and caterpillars on fruits and vegetables, safe for beneficial insects, and approved for organic gardening.

Ideal Use Cases
Perfect for broccoli, tomatoes, and ornamentals when first signs of caterpillars or worms appear, ensuring a bountiful, damage-free harvest.

Customer Praise
Highly praised for its effectiveness, ease of use with the ready-to-use sprayer, and environmental safety, particularly around beneficial insects.
9.5

Excellent

Our Rating

9.5
Simple to use

8.7
worth the money

8.0
Aroma
4

Southern Ag

Southern Ag Thuricide BT Caterpillar Control, 16oz - Pint

29% Off
9.3

Excellent

Our Rating

9.7
Simple to use

9.3
worth the money

8.4
Aroma
5

Monterey

Monterey BT - Bacillus Thuringiensis for Organic Worm and Caterpillar Control Bundled with Measuring Spoon - Concentrate for BT Spray - 16 oz
9.2

Excellent

Our Rating
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6

Bonide
Bonide Thuricide BT Concentrate, 16 oz Ready-to-Mix Solution for Caterpillar, Worm and Moth Control in Home Garden
Main highlights

Key Features
Eco-friendly insecticide for fruits, vegetables, and ornamentals. Kills worms and caterpillars without harming beneficial insects, approved for organic gardening.

Ideal Use Cases
Best for cabbage, broccoli, kale, tomatoes, and more. Perfect for controlling cabbage loopers, hornworms, and tent caterpillars on edible and ornamental plants.

Customer Praise
Highly praised for its effectiveness in stopping worm damage quickly, with noticeable results in 2-3 days, and for being safe around beneficial insects.
Key specs
- duration:2-3 days
- target species:Worms, caterpillars
- active ingredients:Bacillus thuringiensis
- formulation:Concentrate
- scent:N/A
9.1

Excellent

Our Rating

9.1
Simple to use

8.9
worth the money

8.0
Aroma
7

Monterey

Monterey BT Spray for Plants Organic - Spray for Organic Worm and Caterpillar Control - 31 oz
8.8

Very Good

Our Rating
8

Safer
Safer Brand 5163 Caterpillar Killer II Concentrate, 16 Oz For Insects

25% Off
Main highlights

Key Features
Targets caterpillars, gypsy moth larvae, and more without harming beneficial insects. Organic, OMRI Listed, safe until harvest.

Ideal Use Cases
Perfect for organic gardening to protect tomatoes, cabbages, and other vegetables from damaging pests.

Customer Praise
Most reviews highlight its effectiveness in pest control, especially praising its safety for organic gardens.
8.7

Very Good

Our Rating

9.5
Simple to use

9.1
worth the money

8.4
Aroma
9

Bonide

Bonide Captain Jack's Deadbug Brew, 16 oz Concentrate Outdoor Insecticide and Mite Killer for Organic Gardening

49% Off
8.5

Good

Our Rating

9.7
Simple to use

9.3
Aroma

9.1
worth the money
10

Bonide
Bonide Insecticidal Soap, 32 oz Ready-to-Use Spray Multi-Purpose Insect Control for Organic Gardening Indoor and Outdoor

45% Off
Main highlights

Wide_Range_of_Insect_Control
Effectively controls adelgids, ants, aphids, and more insects.

Versatile_Application
Ideal for gardens, lawns, ornamentals, and greenhouses.

Customer_Praised_Effectiveness
Highly rated for killing pests while being gentle on plants.
8.4

Good

Our Rating

9.1
Simple to use

8.4
Aroma

8.0
worth the money

10 Best bt sprays of 2025

1

Monterey - B.t. Bacillus Thuringiensis Bundled with Garden Measuring Spoon - Ready to Spray Worm & Caterpillar Killer Insecticide, OMRI Listed - 32 oz

How do we rank?

How do we rank?

Analyzing top stores

2

SUMMIT 021-6 Caterpillar and Webworm Control-Hose End For Insects, 1-, Quart, White

8.2

8.0

3

Bonide 8066 Captain Jack's Bacillus Thuringiensis BT Organic Worm & Caterpillar Control, 32 oz. Ready-to-Us - Quantity 1

9.5

8.7

8.0

4

Southern Ag Thuricide BT Caterpillar Control, 16oz - Pint

9.7

9.3

8.4

5

Monterey BT - Bacillus Thuringiensis for Organic Worm and Caterpillar Control Bundled with Measuring Spoon - Concentrate for BT Spray - 16 oz

6

Bonide Thuricide BT Concentrate, 16 oz Ready-to-Mix Solution for Caterpillar, Worm and Moth Control in Home Garden

9.1

8.9

8.0

7

Monterey BT Spray for Plants Organic - Spray for Organic Worm and Caterpillar Control - 31 oz

8

Safer Brand 5163 Caterpillar Killer II Concentrate, 16 Oz For Insects

9.5

9.1

8.4

9

Bonide Captain Jack's Deadbug Brew, 16 oz Concentrate Outdoor Insecticide and Mite Killer for Organic Gardening

9.7

9.3

9.1

10

Bonide Insecticidal Soap, 32 oz Ready-to-Use Spray Multi-Purpose Insect Control for Organic Gardening Indoor and Outdoor

9.1

8.4

8.0

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