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NOTE: Thuricide Concentrate has been discontinued and Caterpillar Kill Spray BT is the new name. Same product, just a new name.
Natural Guard Caterpillar Killer Spray with Bt previously known as Thuricide Concentrate is a biological insecticide with Bacillus thuringiensis (Bt) for use on fruits, vegetables, shade trees, and ornamentals plants to treat a variety of leaf-feeding worms. Pests treated include bagworms, tent caterpillars, gypsy moths, cabbage loopers, and tomato hornworms. Hi-Yield Thuricide may be applied up to and including the day of harvest.
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Product Documents
| Active Ingredient | Bacillus thuringiensis subspecies kurstaki strain SA-12 solides, spores, and insecticidal toxins, ATCC # SD-1323 15% |
|---|---|
| Target pests | Gypsy moth, tent caterpillars, cabbage looper, imported cabbage worm, tomato hornworm, bagworms, spring cankerworms, elm spanworms, fall cankerworms, fall webworms, gypsy moths |
| For use in | Fruits, vegetables, broccoli, cauliflower, collards, kale, mustard greens, turnip greens, cabbage, celery, lettuce, melons, tomatoes, shade trees, ornamental plants |
| Application |
Fruits and Vegetables: 1.5 oz. per 3 gallons of water (1 tbsp per gallon) Shade trees and Ornamentals: 2 oz. per 3 gallons of water (4 tsp. per gallon) Apply at first sign of infestation and repeat at weekly intervals when needed * See product label for complete application instructions |
| Pet safe | Yes, if used as directed on Label |
| Yield | 1 pint yields 32 gallons of finished solution for fruits and vegetables or 24 gallons for shade trees and ornamentals |
| Shipping Weight | 1.18 lbs |
| Manufacturer | VPG (Mfg. Number: 40425) |
| UPC | 732221160125 |
| EPA Registration | 70051-65-7401 |
Natural Guard Caterpillar Killer Spray with Bt is a biological insecticide for use on fruits, vegetables, shade trees, and ornamentals plants to treat a variety of leaf-feeding worms. Pests treated include bagworms, tent caterpillars, gypsy moths, cabbage loopers, and tomato hornworms. Hi-Yield Thuricide may be applied up to and including the day of harvest.
What is Thuricide?
Bacillus thuringiensis (Bt) (in the pest control form it is known as Thuricide) is a naturally occurring bacterium found in soils throughout the world. It is unique in that it offers unusual properties that make it useful for pest control, especially the control of leaf-feeding insects. This is because Thuricide reacts with the cells of the stomach lining of target pests, causing them to not be able to feed within hours after contact. The insects eventually die from starvation. The most common strain of Bt is the kurstaki strain which will kill leaf- and needle-feeding insects such as caterpillars and webworms.
Thuricide is generally considered beneficial in that it is naturally occurring and will not kill other non-target insects. For example, if Thuricide is applied to a vegetable garden, it will not kill honeybees or other pollinating insects. Also, Thuricide breaks down in sunlight within 1-2 weeks.
The Kurstaki Strain (Thuricide) will kill vegetable, fruit, tree and crop leaf-feeding insects such as the cabbage worm (cabbage looper, imported cabbageworm, diamondback moth, etc.), tomato and tobacco hornworm, European corn borer, Alfalfa caterpillar, alfalfa webworm, Leafroller, Achemon Sphinx, Tent Caterpillar, Fall Webworm, Leafroller, Red-humped caterpillar, Spiny elm caterpillar, western spruce budworm, pine budworm, and pine butterfly.
Works so far!
By Andy on 04/17/2011
Verified Purchase
thuricide concentrate
By Roger on 08/11/2011
Verified Purchase
I decided to try thuricide, instead of killing tomatoe worms with sevin or other insecticide. I am always concerned about killing off the pollinators, along with the worms. I sprayed at 1 tblsp per gallon, and after 2 days the worms dropped off, so far it seems to work very well. The only question I have about the product that I can't find in any product written material, is; shoul I use the product before an infestation, to prevent it from happening in the 1st place?
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27 of 27 people found this review helpful
Thuricide Concentrate can save waterlilies.
By Mike on 07/08/2011
Verified Purchase
I have used this recently as well as in the past, with 100% effectiveness. I am using it against the China Mark Moth larvae, and other larval insect pest, on my waterlilies. I do mix it strongly, as it is being used in a aquatic environment. 4 capfulls in a 16oz sprayer of water. I spray the pads in late evening, as strong sun will inhibit it's effectiveness. Most of the time, a single application will do the job. Worst case, 3 treatments, 3 evenings in a row. Side benefit, no a single, living mosquito larvae to be found in any of my pond, following the treatments.
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19 of 19 people found this review helpful
Works Effectively - Very impressed!
By A on 11/11/2012
Verified Purchase
After just one use on my vegetable garden there was a significant improvement in health of the leaves. The thuricide did its job in reducing the number of tomato horn worms feeding on my plants. It also worked very well on my bouganville plants that have been unhealthy for years. In just two weeks new plant growth is emerging. Great product and very effective! I highly recommend it. The only drawback is the strong order - use in well ventilated areas.
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17 of 17 people found this review helpful
Thuricide
By Pat on 10/14/2011
Verified Purchase
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68 of 76 people found this answer helpful
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42 of 45 people found this answer helpful
I have an organic garden.
Bacillus thuringiensis (Bt)? (in the pest control form it is known as Thuricide) is a naturally occurring bacterium found in soils throughout the world. The Hi Yield Thuricide Concentrate is not organically certified and therefore would not be appropriate for an organic garden. However, we do offer the Southern Ag Thuricide BT Caterpillar Control which is OMRI certified and would be the appropriate Thuricide product for your organic garden. Be sure to read the Product Label before use.
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30 of 35 people found this answer helpful
Natural Guard Caterpillar Killer Spray with Bt
Rating: 4.5 (34 Reviews / 33 Q&A)
