Bt For Caterpillars (Thuricide) 16 oz.
Best organic pest control for vegetable gardeners protecting their edible crops.
Effectively manage garden pests with Thuricide Bt For Caterpillars. This 16 oz. concentrate utilizes Bacillus thuringiensis (Bt) to target and paralyze the digestive systems of destructive leaf-chewing caterpillars and larvae, such as tomato hornworms and gypsy moths. It is safe for application up to harvest day on vegetables and poses no risk to birds, bees, pets, or humans. This liquid formula is easily applied with standard spray equipment and is ideal for vegetables, trees, and ornamentals, offering a targeted solution for a healthier garden.
$19.95
Owner Satisfaction
4.6
/ 5
Category Rank
358
/ 1771
#358 in Pesticides
Price vs Category Average
-55%
Below average
Size
16.
/ oz Concentrate bottle
Who it's for
- Gardeners protecting beneficial pollinators and predatory insects
- Organic growers maintaining strict chemical-free standards
- Farmers needing rapid relief from active caterpillar infestations
Who should skip it
- Busy gardeners unable to commit to frequent reapplication schedules
- Users seeking a comprehensive solution for all life stages
- Conservationists trying to protect Monarch butterfly populations
Performance breakdown
Targeted Pest Control
Highly effective at neutralizing leaf-chewing larvae without harming beneficial garden insects.
Safety Profile
Safe for use around pets, children, and pollinators until harvest day.
Application Versatility
Liquid concentrate formula works seamlessly across vegetables, trees, and ornamental plants.
Ease of Preparation
Simple dilution process makes mixing for standard sprayers quick and intuitive.
Biological Efficacy
Bacillus thuringiensis provides a proven, natural defense against destructive caterpillar populations.
Coverage Efficiency
Concentrated 16-ounce bottle offers significant volume for treating large garden areas.
Key Specs
Size
16 oz. Concentrate bottle
Active Ingredient
Bacillus thuringiensis (Bt)
Application Method
Concentrate, Requires Sprayer
Product Form
Concentrate, Liquid Spray
Net Volume
16.0 fluid ounces
Target Life Stage
Larvae
Application Location
Outdoor, Lawn and Garden, Vegetable Plants
Safe for Beneficial Insects
true
Features
- Controls leaf-chewing worms and caterpillars
- Active ingredient: Bacillus thuringiensis (Bt)
- Safe for use up to harvest day
- Harmless to beneficial insects and pets
- Paralyzes pest digestive systems
- Effective on vegetables and ornamentals
- 16 oz. concentrate liquid formula
What customers say
Gardeners highly value Thuricide for its targeted and effective organic caterpillar control. Users consistently praise its biological nature, noting its ability to eliminate destructive larvae like hornworms and loopers quickly while safely sparing beneficial insects and pollinators. This environmental safety is a major loyalty driver. The product offers excellent value, as the concentration lasts through multiple seasons. While effectiveness is strong, users recognize that reapplication is necessary after rain, which is typical for Bt products. Overall, Thuricide is viewed as a reliable, high-quality staple for eco-conscious pest management, delivering on its promise of focused garden protection.
Know before you buy
Thuricide contains Bacillus thuringiensis (Bt), a naturally occurring bacterium. When caterpillars ingest the treated foliage, the Bt produces proteins that paralyze their digestive systems, causing them to stop feeding and eventually die.
Yes. This product is safe for application up to the day of harvest, meaning you do not need to wait a specific number of days after spraying before picking your vegetables.
No, Thuricide is specifically formulated to target leaf-chewing caterpillars and larvae. It is harmless to beneficial insects like bees, as well as birds, pets, and humans.
You can use any standard garden sprayer, such as a hand-pump pressure sprayer or a hose-end sprayer, to apply the diluted solution. Be sure to follow the label instructions for the correct mixing ratio before application.
You can safely use it on both vegetables and ornamentals. It is effective for protecting a wide variety of plants, including trees, shrubs, and flowers, from caterpillar damage.
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