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BONIDE

Bonide Thuricide Bt Concentrate

Bonide Thuricide Bt Concentrate is a natural, easy-to-use insecticide that makes it easy to control destructive worms and caterpillars on vegetables, fruits, nuts, shade trees, and ornamentals.

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Bonide Thuricide Bt Concentrate Product Page
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Price as of
04/14/26
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Bonide Thuricide Bt Concentrate, manufactured by Bonide, is an easy-to-use biological insecticide concentrate that helps residential gardeners effectively control leaf-eating pests such as worms and caterpillars within 2-3 days for various plant types.

This natural insecticide solution contains Bacillus thuringiensis subspecies, a naturally occurring bacteria. This product specifically targets caterpillars and worms, disrupting their digestive systems and causing them to stop feeding shortly after ingestion.

Bonide Thuricide Bt Concentrate is a non-toxic biological insecticide that only affects caterpillars and leaf-eating worms, ensuring beneficial pests like birds, earthworms, bees, and ladybugs.

Tools Needed

It can be applied with a hose-end sprayer, backpack sprayer, handheld pump sprayer, or mist blower.

How to Use

  • Step 1: Insect for pest activity to determine where to make applications and carefully read the product label for specific restrictions and application rates. Depending on the pest and crop, you will apply 2-4 teaspoons of Bonide Thuricide Bt Concentrate per gallon of water. 
  • Step 2: Shake or stir thoroughly before use. Pour half the amount of water into the spray tank, add the proper amount of product, then pour in the remaining half of water. Close the tank lid and shake well. Do not store diluted spray mix for more than 12 hours.
  • Step 3: Spray the foliage of the affected plants thoroughly, ensuring even coverage on both the tops and undersides of leaves.

Where to Use

Bonide Thuricide Bt Concentrate can be used on listed residential vegetable gardens, and on fruits, shade trees, and ornamentals. 

When to Use

Apply when pest activity is noticed on days when rainfall is not expected to occur within the next 24 hours after treatment. 

Safety Information

Bonide Thuricide Bt Concentrate is safe to use around children and pets when applied according to the product label instructions. Always wear the proper personal protective equipment (PPE) when mixing and applying this product. 

Special Considerations

A sticker and evaporation retardant (such as molasses) may be added to the spray mix.

More Information
Restricted Use No
Shipping Restrictions SD
Availability Online
Signal Word CAUTION
Keith's Pro Tip "Regular prune limbs, leaves, and other parts of the plant where you have noticed webbing to help reduce future pest activity."
Time to Kill The insects stop feeding and die within 2-3 days of ingestion of foliage treated with Bonide Thuricide Bt Concentrate.
Chemical Type Insecticide
Formulation Suspended Concentrate
Application Methods Spot Treatment
Product Drawbacks Reapplications are needed after heavy rains.
Active Ingredient Bacillus thuringiensis subspecies 15.0%
Application Equipment Gloves
Use Sites Outdoors
Yield Coverage with Bonide Thuricide BT Concentrate will vary based on plant size.
EPA Registration No. 4-226
Shelf Life Bonide Thuricide Bt Concentrate will last for 3 years when stored in a dry, clean location.
Comparable Products Captain Jack's Bt Thuricide RTU
Children or pets? No
Property Characteristics None
AvailabilityOnline
Restricted UseNo
BrandBONIDE
Keith's Pro Tips"Regular prune limbs, leaves, and other parts of the plant where you have noticed webbing to help reduce future pest activity."
Product DrawbacksReapplications are needed after heavy rains.
Target PestsBagworms, Caterpillars, Diamondback moth, Redhumped caterpillars, Cabbage looper, Imported cabbage worm, Green cloverworm, Omnivorous and fruit tree leaf roller, Spring cankerworm, Fall cankerworm, Gypsy moth, Tent caterpillar, Tomato hornworm, Tomato fruitworm, Rindworm complex, Orange dog, Elm spanworm, Tufted apple budmoth, and Fall webworm.
Application EquipmentGloves
Application MethodsSpot Treatment
Active IngredientBacillus thuringiensis subspecies 15.0%
Product TypeInsecticide
FormulationSuspended Concentrate
Shelf LifeBonide Thuricide Bt Concentrate will last for 3 years when stored in a dry, clean location.
YieldCoverage with Bonide Thuricide BT Concentrate will vary based on plant size.
Use SitesOutdoors
Time to KillThe insects stop feeding and die within 2-3 days of ingestion of foliage treated with Bonide Thuricide Bt Concentrate.
Comparable ProductsCaptain Jack's Bt Thuricide RTU
EPA Registration #4-226

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