---
product_id: 22608556
title: "SUMMIT 021-6 Caterpillar and Webworm Control-Hose End For Insects, 1-, Quart, White"
brand: "summit"
price: "₩93113"
currency: KRW
in_stock: true
reviews_count: 8
category: "Summit"
url: https://www.desertcart.kr/products/22608556-summit-021-6-caterpillar-and-webworm-control-hose-end-insects
store_origin: KR
region: South Korea
---

# treats up to 24 gallons for large coverage 32 fl oz ready-to-mix concentrate hose-end spray for effortless application SUMMIT 021-6 Caterpillar and Webworm Control-Hose End For Insects, 1-, Quart, White

**Brand:** summit
**Price:** ₩93113
**Availability:** ✅ In Stock

## Summary

> 🌿 Defend your trees like a pro—spray smart, save green!

## Quick Answers

- **What is this?** SUMMIT 021-6 Caterpillar and Webworm Control-Hose End For Insects, 1-, Quart, White by summit
- **How much does it cost?** ₩93113 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/products/22608556-summit-021-6-caterpillar-and-webworm-control-hose-end-insects)

## Best For

- summit enthusiasts

## Why This Product

- Trusted summit brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Trusted by Thousands:** 4.5-star rated with over 2,500 reviews—join the community of pest-free gardeners.
- • **Broad Coverage Capacity:** Mixes to yield up to 24 gallons, protecting your entire yard with one quart.
- • **Targeted Biological Control:** Safe for veggies and beneficial insects, only paralyzes harmful caterpillars.
- • **Long-Term Tree Health Savior:** Proven to save mature trees from devastating caterpillar infestations over multiple seasons.
- • **Effortless Hose-End Application:** Simply attach and spray—no mess, no fuss, just fast pest control.

## Overview

SUMMIT 021-6 is a 32 fl oz biological caterpillar and webworm control concentrate designed for hose-end spraying. It mixes with water to produce 12 to 24 gallons of treatment solution, enabling broad coverage of shade and fruit trees. Safe for use on vegetables up to harvest day and selectively targets leaf-eating caterpillars without harming beneficial insects. Highly rated by thousands, it offers a proven, long-term solution to protect your outdoor living spaces from destructive pests.

## Description

Biological caterpillar and webworm control, that, when mixed with water, yields 12 to 24 gallons of material. Our convenient hose-end quart makes spraying shade and fruit trees a breeze.

Review: I would give this 10 stars if I could! - 1st review... We bought a bottle of this each spring for 2 consecutive years (2023-24), but that was after the moth-pocalypse that took off in '21, then accelerated exponentially in '22. We were too late before we realized that those Gypsy moths (I know they are called something else now, but... 🤷‍♀️ spongy moths? I don't remember) were literally stripping ever tree in our woods with no end in sight. The whole county, in fact, has been overrun with this scourge. It was worrisome, to say the least. We have massive mature walnuts in our front yard that are one of my very favorite parts of our home and in '22 I genuinely feared they wouldn't make it when the worms ate all the leaves off them in a matter of weeks. You could hear their droppings falling incessantly on quiet spring nights. The stuff of nightmares. Anyway, in '22 we tried sticky bands, gels and sprays... We cleaned all the leaf litter in fall. You name it. But we missed the primary window in May/June to knock them down. By '23 I was ready. We treated the trees as high as we could spray. Every tree we could reach was drenched consistently. By spring of '24 when we bought more, the population had noticably declined, but was still detrimental to the trees for sure. But we did the same, treating the trees several times at the critical instar period. The moths that came out in mid summer was nothing like the plague that swarmed us in years prior. In those first years it had been like a snowstorm in summer there were so many. Fast forward to today... June 2025. The caterpillars are gone. I haven't seen a single one this spring. Maybe there's a lonely band of rebel survivors out there plotting our trees demise, but they are keeping a low profile if so. No cocoons. No moths. Our trees are fully greened out (ignore the little branches that fell in the storm a few days back. Haven't gotten to picking them up yet). Our Norway Maple has still not quite recovered from the abuse it took - it was a moth delicacy apparently, but it is clearly making its comeback. All in all, this stuff was worth it. Yes, it took some dedication on our part to treat and repeat, as well as a lot of patience. The cure took some time to spread thru the moth population unfortunately. But it worked! My beloved walnut grove lives to see another few decades I hope. If you are on the fence about this product, try it. But be prepared to continuously apply during the critical period in your particular pest's life cycle. ID the pest, buy a sprayer and get to work. And don't just expect the worms to drop dead suddenly. Thats not how BT works. At least not for us. But it did work very well and it seems to be the perfect long term solution. Edit: One sad note to add: We also have several 1000 sq ft of native plant, herb and vegetable gardens, which mostly came out of the moth-pocalypse ok, and we avoided treating anywhere near them or the beehives (for obvious reasons), but insects travel. Unfortunately these past few years our native butterfly and moth populations declined precipitously as well. Was it the BT? I can only guess. But in almost 20 years here, we've never had a shortage of butterflies, moths, and even dragon flies until now. It could be a fluke. Correlation does not equal causation, but... I thought I should mention it. We stopped treating as soon as the pest population was controlled, so hopefully the beneficials rebound. We can only provide good habitat and hope.
Review: Garden worms gone! Completely human safe. - Works very well on army worms, tomato hornworms, and any other leaf-eating caterpillars. Perfectly safe to use on veggies up to and including day of harvest. Only harmful to caterpillars. It just paralyzes their digestive system.

## Features

- package height : 23.876 cm
- package length : 6.604 cm
- package width : 12.446 cm
- Product type : OUTDOOR LIVING
- Convenient hose-end ready to spray

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00B7WO1NW |
| Best Sellers Rank | #19,044 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #95 in Insect & Pest Repellent Spray Concentrates |
| Brand | Summit |
| Customer Reviews | 4.5 4.5 out of 5 stars (2,531) |
| Department | Unisex-Adult |
| Global Trade Identification Number | 00018506000219 |
| Is Discontinued By Manufacturer | No |
| Item Form | Spray |
| Item Weight | 2.5 pounds |
| Item model number | 021-6 |
| Liquid Volume | 32 Fluid Ounces |
| Manufacturer | Summit...reponsible solutions. |
| Product Dimensions | 5.3 x 3 x 9.5 inches |
| Target Species | Insects |
| UPC | 018506000219 |

## Product Details

- **Brand:** Summit
- **Item Form:** Spray
- **Item Weight:** 2.5 Pounds
- **Liquid Volume:** 32 Fluid Ounces
- **Target Species:** Insects

## Images

![SUMMIT 021-6 Caterpillar and Webworm Control-Hose End For Insects, 1-, Quart, White - Image 1](https://m.media-amazon.com/images/I/71rt44B9a+L.jpg)

## Questions & Answers

**Q: Can this be sprayed directly on to vinyl siding house that is covered in caterpillars?**
A: Yes, but it works best sprayed on what they eat. If it rains on the siding, it will all be washed away. It should not damage the siding, it is just a biological spray.

**Q: Will it work on BAGWORMS?**
A: Absolutely, it did great in bag worms.

**Q: can you spray this on bushes?**
A: yes. I used it on junipers that had a very bad case of bagworms. It didn't hurt the bushes at all and did kill the worms.

**Q: will this harm any plants & flowers?**
A: I use it yearly on my evergreen trees that surround the back yard.  I follow the instructions and have no issues.  Tall grasses and burning bushes are next to the evergreen trees and receive the spray.  There has been no affect on either of those plants from the spray.  I cannot answer for other plants, but believe used as instructed, most plants will not be affected.

## Customer Reviews

### ⭐⭐⭐⭐⭐ I would give this 10 stars if I could!
*by T***E on June 11, 2025*

1st review... We bought a bottle of this each spring for 2 consecutive years (2023-24), but that was after the moth-pocalypse that took off in '21, then accelerated exponentially in '22. We were too late before we realized that those Gypsy moths (I know they are called something else now, but... 🤷‍♀️ spongy moths? I don't remember) were literally stripping ever tree in our woods with no end in sight. The whole county, in fact, has been overrun with this scourge. It was worrisome, to say the least. We have massive mature walnuts in our front yard that are one of my very favorite parts of our home and in '22 I genuinely feared they wouldn't make it when the worms ate all the leaves off them in a matter of weeks. You could hear their droppings falling incessantly on quiet spring nights. The stuff of nightmares. Anyway, in '22 we tried sticky bands, gels and sprays... We cleaned all the leaf litter in fall. You name it. But we missed the primary window in May/June to knock them down. By '23 I was ready. We treated the trees as high as we could spray. Every tree we could reach was drenched consistently. By spring of '24 when we bought more, the population had noticably declined, but was still detrimental to the trees for sure. But we did the same, treating the trees several times at the critical instar period. The moths that came out in mid summer was nothing like the plague that swarmed us in years prior. In those first years it had been like a snowstorm in summer there were so many. Fast forward to today... June 2025. The caterpillars are gone. I haven't seen a single one this spring. Maybe there's a lonely band of rebel survivors out there plotting our trees demise, but they are keeping a low profile if so. No cocoons. No moths. Our trees are fully greened out (ignore the little branches that fell in the storm a few days back. Haven't gotten to picking them up yet). Our Norway Maple has still not quite recovered from the abuse it took - it was a moth delicacy apparently, but it is clearly making its comeback. All in all, this stuff was worth it. Yes, it took some dedication on our part to treat and repeat, as well as a lot of patience. The cure took some time to spread thru the moth population unfortunately. But it worked! My beloved walnut grove lives to see another few decades I hope. If you are on the fence about this product, try it. But be prepared to continuously apply during the critical period in your particular pest's life cycle. ID the pest, buy a sprayer and get to work. And don't just expect the worms to drop dead suddenly. Thats not how BT works. At least not for us. But it did work very well and it seems to be the perfect long term solution. Edit: One sad note to add: We also have several 1000 sq ft of native plant, herb and vegetable gardens, which mostly came out of the moth-pocalypse ok, and we avoided treating anywhere near them or the beehives (for obvious reasons), but insects travel. Unfortunately these past few years our native butterfly and moth populations declined precipitously as well. Was it the BT? I can only guess. But in almost 20 years here, we've never had a shortage of butterflies, moths, and even dragon flies until now. It could be a fluke. Correlation does not equal causation, but... I thought I should mention it. We stopped treating as soon as the pest population was controlled, so hopefully the beneficials rebound. We can only provide good habitat and hope.

### ⭐⭐⭐⭐⭐ Garden worms gone! Completely human safe.
*by G***G on September 22, 2025*

Works very well on army worms, tomato hornworms, and any other leaf-eating caterpillars. Perfectly safe to use on veggies up to and including day of harvest. Only harmful to caterpillars. It just paralyzes their digestive system.

### ⭐⭐⭐⭐ Good buy
*by N***E on June 14, 2025*

This product was easy to use and covered more than I expected. The coverage was great but gradually turn your hose on because the speed was powerful! Seemed to work well and definitely cut back on the number of bugs, we live in a very wooded area.

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*Product available on Desertcart South Korea*
*Store origin: KR*
*Last updated: 2026-02-24*