Natural Guard Caterpillar Killer Spray with Bt

4.5 out of 5 stars 28 Reviews | 25 Q&A

Natural Guard Caterpillar Killer Spray with Bt
Natural Guard Caterpillar Killer Spray with Bt

Ask A Pro

Call Us: 866-581-7378
Mon-Fri 9am-5pm ET
Email Customer Service
For help with your order
Live Chat
DIY Pros Available Now

You May Also Need

Temprid FX 8 mL
$6.98

Average Rating

4.5 out of 5 stars Rating: 4.6

28 Reviews | 25 Q&A

Product Overview

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.

Features and Specs

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, when 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
Manufactured By: VPG
UPC: 732221404250

Details

Thuricide Concentrate 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.

  
  • 5 of 5 Stars

    Works so far!

    By Andy on 04/17/2011

    Verified Purchase

    Terrible problem with tent caterpillars in our apple & pecan trees. Applied Thuricide when tents started to appear and they were gone in a week. No signs of any tents after a month of treatment

    Was this review helpful to you?  YesNo

    19 of 19 people found this review helpful

  • 5 of 5 Stars

    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?

    Was this review helpful to you?  YesNo

    18 of 18 people found this review helpful

  • 5 of 5 Stars

    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.

    Was this review helpful to you?  YesNo

    13 of 13 people found this review helpful

  • 5 of 5 Stars

    Thuricide

    By Pat on 10/14/2011

    Verified Purchase

    Works great on the moths for the Cole Crops. Wish it would work for aphids.

    Was this review helpful to you?  YesNo

    11 of 11 people found this review helpful

  • 5 of 5 Stars

    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.

    Was this review helpful to you?  YesNo

    11 of 11 people found this review helpful

See all 28 customer reviews

Questions & Answers

Have a question about this product?
  
Q
What is the shelf life of Thuricide concentrate? Is it still good a year or two after date of purchase?
A
The shelf life of Thuricide Concentrate is 3-5 years from date of purchase if kept in a cool/room temp dry place.

Was this answer helpful to you?  YesNo

54 of 56 people found this answer helpful

Q
After Thuricide is applied how long till the vegetable is safe to eat?
A
According to the the Thuricide product label you may apply Thuricide up to and on the day of harvest.

Was this answer helpful to you?  YesNo

25 of 26 people found this answer helpful

Q
Can Thuricide Concentrate be sprayed on the ground? Is it harmful to animals such as dogs?
A
Thuricide Concentrate is a very safe to use when the product label is followed. Be sure all pets and people are out of the area when Thuricide is being applied and they do not return until the area is dry. Thuricide Concentrate is labeled to be applied to fruits, vegetables, ornamentals and shade trees.

Was this answer helpful to you?  YesNo

25 of 27 people found this answer helpful

Q
Does heavy rain wash Thuricide off the plants and require respray?
A
Heavy rain should not wash off Thuricide. However, the label indicates you can incertain times apply at first sign of infestation and repeat at weekly intervals when needed. Please refer to the product label to verify if your use requires respray.

Was this answer helpful to you?  YesNo

13 of 13 people found this answer helpful

Q
Does Thuricide kill catepillars on Snowbush plants?
A
Thuricide will kill catepillars on any plant you spray it on and is safe to be used on ornamentals, fruits and vegetables without harming them. Please let us know if you have any other questions.

Was this answer helpful to you?  YesNo

11 of 11 people found this answer helpful

See all 25 customer questions

Natural Guard Caterpillar Killer Spray with Bt 4.5 out of 5 stars Rating: 4.6 (28 Reviews / 25 Q&A)

From $17.90 + Free Shipping*