Play from your browser
No featured offers available
Learn more

No featured offers available

We feature offers with an Add to Cart button when an offer meets our high standards for:

  • Quality Price,
  • Reliable delivery option, and
  • Seller who offers good customer service
“No featured offers available” means no offers currently meet all of these expectations. Select See All Buying Options to shop available offers.

Added to

Sorry, there was a problem.

There was an error retrieving your wish lists. Please try again.

Sorry, there was a problem.

List unavailable.

Safer's 17-2110CAN Safer's 17-2110CAN BTK Caterpillar Killer 100mL Concentrate

4.6 out of 5 stars 1,112 ratings

To see product details, add this item to your cart. You can always remove it later.
Item form Liquid
Item weight 83 Grams
Liquid volume 100 Milliliters
Active ingredients Bacillus thuringiensis subsp kurstaki
Brand Safer's
Target species Insects
UPC 067894101107

About this item

  • Controls caterpillars including cabbage worm, tomato hornworm, tent caterpillars, gypsy moth, leafrollers, and other listed insects
  • Can be used on vegetables, fruit, trees, and ornamentals
  • Active Ingredient: Bacillus thuringiensis subsp. kurstaki, strain ABTS-51
  • biological insecticide that controls caterpillars

Product details

  • Is discontinued by manufacturer ‏ : ‎ No
  • Product Dimensions ‏ : ‎ 3.81 x 7.62 x 10.66 cm; 83 g
  • Date First Available ‏ : ‎ Sept. 4 2019
  • Manufacturer ‏ : ‎ Safer's
  • Place of Business ‏ : ‎ LANCASTER, PA, 17602 US
  • ASIN ‏ : ‎ B07XF875RN
  • Item model number ‏ : ‎ 17-2110CAN
  • Customer Reviews:
    4.6 out of 5 stars 1,112 ratings

Product description

Safer’s BTK Caterpillar Killer is a biological insecticide that controls caterpillars including cabbage worm, tomato hornworm, tent caterpillars, gypsy moth, leafrollers, and other listed insects. Simply mix the concentrate with water and spray on vegetables, fruit, trees, and ornamentals. After ingesting the treated portion of the leaf, caterpillars stop feeding within hours and die within a few days. This 100mL concentrate makes 33.3L of solution.

Top Brand: Safer's

Highly Rated
10K+ customers rate items from this brand highly
Trending
10K+ orders for this brand in past 3 months
Low Returns
Customers usually keep items from this brand

From the manufacturer

eliminates a wide variety of insects
SAFER’S BTK CATERPILLAR KILLER CONCENTRATE – 100 ML

Target Many Insects with One Product

Why buy multiple products to eliminate an insect infestation when one would do the job? Safer’s BTK Caterpillar Killer controls a variety of caterpillars including cabbage worms, tomato hornworms, tent caterpillars, gypsy moths, leafrollers, and many more. The easy-to-use concentrate allows you to quickly mix the formula and spray where needed. When used as directed, the concentrate is powerful enough to kill pest insects without causing damage to your vegetables, fruit, trees, or ornamentals.

caterpillars including cabbage worms, tomato hornworms, tent caterpillars, gypsy moths, leafrollers

Small Bottle, Maximum Coverage

Don’t let the small bottle size fool you. Safer’s BTK Caterpillar Killer comes as a concentrate to be mixed with water when ready to use. While the bottle is 100 mL, it mixes with water to provide over 33L of solution to help you eliminate caterpillars nearly anywhere on your property. Once the caterpillars ingest the formula, they will stop feeding within a few hours and die within a few days.

How to Use

areas of insect damage

Step 1: Identify Areas of Insect Activity

Conduct a thorough search of your property and garden to find the areas were caterpillars are feasting on your plants.

add water per the directions on the bottle

Step 2: Mix the Concentrate

Follow the instructions on the back of the bottle to properly mix the concentrate with water for maximum efficiency.

spray area per the directions

Step 3: Spray as Directed

Spray all leaf surfaces, top and bottom, with the concentrate mixture without runoff to provide maximum coverage.

monitor the area for insect activity

Step 4: Monitor the Infestation

Monitor your plants for insect activity and reapply if needed after 7-10 days.

Safer’s BTK Caterpillar Killer Concentrate
Safer’s End-All Miticide, Insect killer, Acaricide Concentrate
Safer’s End-All Miticide, Insect Killer, Acaricide Ready-to-Use Spray
Safer’s Insect Killer Soap Concentrate
Customer Reviews
4.6 out of 5 stars 1,112
4.4 out of 5 stars 1,341
4.2 out of 5 stars 1,579
4.2 out of 5 stars 1,861
Model Number 17-2110CAN 31-6035CAN 31-6025CAN 01-2022CAN
Size 100 mL 500 mL 1 L 500 mL
Presentation Concentrate Concentrate Ready-to-use spray Concentrate
Active Ingredients Bacillus thuringiensis subsp kurstaki, strain ABTS-51 Potassium salts of fatty acids 20%, pyrethrins 0.2% Potassium salts of fatty acids 1%, pyrethrins 0.01% Potassium salts of fatty acids 50.5%
For Use Against Cabbage worms, tomato hornworms, tent caterpillars, gypsy moths, and leafrollers Aphids, whiteflies, scale, spider mites, mealybugs, caterpillars, beetles, and chinch bugs. Aphids, whiteflies, scale, spider mites, mealybugs, caterpillars, beetles, and chinch bugs. Aphids, mealybugs, spider mites, whiteflies, soft brown scale, psyllids rose or pear slugs, earwigs, and elf leaf miners.
For Use On Vegetables, fruits, trees, and ornamentals Outdoor plants Outdoor plants Vegetables, fruit, shrubs, trees, and greenhouse plantings

Brand in this category on 鶹

Important information

Directions

Mix the concentrate with water and spray on vegetables, fruit, trees, and ornamentals.

Brands in this category on 鶹

Customer reviews

4.6 out of 5 stars
1,112 global ratings

Review this product

Share your thoughts with other customers

Customers say

Customers like the product for its effectiveness in killing boxwood damage. They mention it works well to eliminate bugs, is easy to prepare, and is an environmentally friendly alternative. Customers also appreciate the duration of the product, saying it lasts all season and is potent for 7-10 days.

97 customers mention "Boxwood damage"91 positive6 negative

Customers are satisfied with the product. They mention it works well to eliminate bugs, clear their boxwoods of the worm destroying them, and keeps white flies off their cabbage. Some say it works the first time and is highly recommended for the boxwood problem this year.

"Great product to keep white flies off my cabbage." Read more

"...We lost one, but another one that looked dead came back. It works." Read more

"...After a few days of application I noticed the damage has subsided without more holes...." Read more

"Highly recommended for the Boxwood problem this year. I have no commentary on the effectiveness yet...." Read more

12 customers mention "Ease of use"12 positive0 negative

Customers like the ease of use of the pesticide. They mention it's super easy to use and easy to prepare.

"...Super easy to use, I mix in a 2litre sprayer and use a medicine syringe to measure the right amount." Read more

"Easy to use,works my plants" Read more

"Easy to use and gets rid of the problem fast (within a couple of days)." Read more

"Very good product to fight caterpillar invasion. Easy to use with our sprayer." Read more

12 customers mention "Environmentally friendly"12 positive0 negative

Customers find the pesticide to be an excellent alternative to avoiding chemicals. They mention it's safe for the environment and is much better than chemicals and additives. Customers also say it's a great organic method to fight caterpillars and similar pests.

"...My hedges came back and I love that it’s safe to use around my fish pond and my dog" Read more

"...start eating my food and medicine, btk is a great organic method to fight catapillers, and similar pests that ravage gardens eating and pooping on..." Read more

"What I like is that it’s organic. It goes a long way, will last a long time because it makes a lot of spray for my veggies...." Read more

"...Safe for us and the plants." Read more

4 customers mention "Duration"4 positive0 negative

Customers like the duration of the pesticide. They mention it lasts all season and is still very potent for 7-10 days.

"...time, they did not return, Used at the beginning of summer and lasted all season. Only used one time." Read more

"...It goes a long way because you only need a little to combine with water...." Read more

"What I like is that it’s organic. It goes a long way, will last a long time because it makes a lot of spray for my veggies...." Read more

"...say to discard after 24 or 48 hours, it was still very potent for 7-10 days. Just keep it out of direct sunlight and high temperatures." Read more

Seems to be doing the trick
5 out of 5 stars
Seems to be doing the trick
No, grape moth infestation this year! 🙌🏻 very happy with this product and the results.
Thank you for your feedback
Sorry, there was an error
Sorry we couldn't load the review

Top reviews from Canada

  • Reviewed in Canada on April 16, 2025
    Verified Purchase
    as advertised
  • Reviewed in Canada on February 21, 2025
    Verified Purchase
    Great product to keep white flies off my cabbage.
  • Reviewed in Canada on September 27, 2024
    Verified Purchase
    I started to see small caterpillars on my medical cannabis plants so applied some of this BTK and no negative effects. The little buggers seem to have gone way too.
  • Reviewed in Canada on September 12, 2024
    Verified Purchase
    I have a boxwood hedge that looked like it was dead until I found out that we had a box tree moth infestation in our area. I got this stuff and applied it twice, a month apart in June and July. The hedge is now looking lush and full of leaves. I have enough of this left for one more application which will be applied this weekend (September 14) just to be sure.
    2 people found this helpful
    Report
  • Reviewed in Canada on June 10, 2024
    Verified Purchase
    I applied this product to a hedge (drenched it using a bucket) that was infested with Asian box tree caterpiller.
    A massive downpour of rain, about 16 hrs later, had me worried that it was mostly washed off.
    To my surprised, I examined the hedge about 2 days after application and immediately saw many dead caterpillers.
    Mission accomplished......though I'll have to await next summer for the hedge to fully recover.
    One person found this helpful
    Report
  • Reviewed in Canada on December 17, 2024
    Verified Purchase
    Très efficace pour empêcher la teigne du poireau dans ma culture d’ail
    Report
  • Reviewed in Canada on August 9, 2024
    Verified Purchase
    Was advised by a City of Toronto parks and forestry worker to use this on boxwoods. Spray in May and in Aug-Oct... worked well so far, but looking everywhere to find this again. Seems that demand has outstripped supply - nothing online, or in retail at the box stores or local hardware stores.
  • Reviewed in Canada on August 17, 2024
    Verified Purchase
    BTK is recommended to be the best way to get rid of the blight of caterpillars destroying our boxwood bushes. The jury is still out after 2 applications but I remain hopeful.