---
product_id: 670989
title: "5118-6 Insect Killing Soap Concentrate - Insecticidal Soap for Plants - Kills Aphids, Whiteflies, Thrips, Spider Mites, and More - OMRI Listed for Organic Use"
brand: "safer"
price: "¥7949"
currency: JPY
in_stock: true
reviews_count: 11
category: "Safer"
url: https://www.desertcart.jp/products/670989-5118-6-insect-killing-soap-concentrate-insecticidal-soap-for-plants
store_origin: JP
region: Japan
---

# OMRI Listed - organic gardening safe Kills 20+ soft-bodied pests on contact 16 fl oz concentrate - makes 6 gallons 5118-6 Insect Killing Soap Concentrate - Insecticidal Soap for Plants - Kills Aphids, Whiteflies, Thrips, Spider Mites, and More - OMRI Listed for Organic Use

**Brand:** safer
**Price:** ¥7949
**Availability:** ✅ In Stock

## Summary

> 🌱 Defend your garden organically—because your plants deserve the best shield!

## Quick Answers

- **What is this?** 5118-6 Insect Killing Soap Concentrate - Insecticidal Soap for Plants - Kills Aphids, Whiteflies, Thrips, Spider Mites, and More - OMRI Listed for Organic Use by safer
- **How much does it cost?** ¥7949 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/670989-5118-6-insect-killing-soap-concentrate-insecticidal-soap-for-plants)

## Best For

- safer enthusiasts

## Why This Product

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

## Key Features

- • **Easy Application Strategy:** Spray every 5-7 days at first sign of pests, focusing on leaf undersides with angled sprayers for maximum impact and minimal waste.
- • **Versatile Plant Protection:** Safe for flowers, herbs, vegetables, houseplants, shrubs, and trees—use from seedling to harvest for continuous defense.
- • **Concentrated & Cost-Effective:** One 16 oz bottle yields up to 6 gallons of spray, letting you tackle seasonal infestations with precision and budget-friendly efficiency.
- • **Powerful Organic Pest Control:** Harness potassium salts of fatty acids to dehydrate and eliminate aphids, whiteflies, spider mites, and more—without harming your plants or beneficial insects.
- • **Eco-Conscious & OMRI Certified:** Breaks down naturally within 7-10 days, aligning with organic gardening standards for peace of mind and environmental responsibility.

## Overview

Safer 5118-6 Insect Killing Soap Concentrate is a 16 oz OMRI-listed organic insecticidal soap that targets over 20 soft-bodied pests including aphids, whiteflies, and spider mites. Using potassium salts of fatty acids, it kills insects on contact by breaking down their protective outer shell. This concentrate produces up to 6 gallons of spray, safe for use on a wide range of plants from vegetables to ornamentals, and can be applied up until harvest. It’s an eco-friendly, cost-effective solution for professional-grade pest control that supports sustainable gardening practices.

## Description

Product Description Safer Brand 16 oz. Concentrate Insect Killing Soap is a solution used for plant protection, effectively acting as an aphid spray for outdoor plants and a mealy bug killer for plants indoor. It tackles a variety of insect pests, including aphids, whiteflies, mealybugs, and spider mites, making it an ideal aphids killer for outdoor plants. Safer Brand Insect Killing Soap uses potassium salts of fatty acids to compromise the insect's protective outer shell. Apply every 7-10 days when pests are present. This 16 fl oz container produces 6 gallons of bug control for vegetable gardens and other plant care. As a contact killer, several applications may be necessary for full control. Like watering, avoid using during the peak of the day or above 90 degrees F to prevent leaf damage. The formula breaks down naturally within 7-10 days and does not linger in the environment, aligning with principles. From the Manufacturer: it is suitable for houseplants, ornamental foliage, flowering plants, and fruits and vegetables, serving effectively as an aphid spray for vegetables and spider mites spray for plants. From the Manufacturer Use on houseplants, ornamental foliage plants, flowering plants, and fruits and vegetables. Kill aphids, mealy bugs, spider mites, and whiteflies. 16 oz. concentrate.

Review: Great product, kills just about any soft bodied pest (including ants!!!) - I use this product primarily to keep aphids off my broccoli, cabbage, onions, kale, and plum tree. So far, I've had a lot of good success with it and it hasn't damaged my plants like some other products that I've used in the past. There's a couple of tricks to this product. First, most of the pests congregate on the bottom-side of leaves so you need to have a strategy to access and spray the bottom-side. Spraying the topside of the leaves is a waste of time and won't do anything for you. My method of getting to the underside of the leaves without being a contortionist is to use a pump sprayer that has a wand with an angled tip. Second, don't be cheap. Once you access the underside of the leaves, give them a good spray and make sure all critters are fully soaked. Ever notice how your hands feel dry if you wash them often with soap? That's exactly how this product works...it "dries out" the critters. That's why it's so important to make sure the critters are fully soaked. As an added bonus, I've realized that this product can also kill soft bodied caterpillars that also love to chew on most plant leaves. I've successfully used this product on my apple and cherry trees to get rid of caterpillars; the only trick is that you have to catch the critters in the act. That said, if you have a heavy caterpillar infestation, you're better off using BT instead of this product. Safer Brands offers a BT formula that I use and is very effective if you have lots of caterpillars around. Buying the concentrate is the way to go from a $$ perspective. It's not that hard to make a spray solution. I use 2-4 tbsp of the product in a 1 gallon pump bottle and then fill it up to the top with water. Shake well and you're ready to go. A funnel is not necessary but certainly makes it easier to fill the bottle without getting the concentrate or water everywhere. Depending on the level of infestation you have, you can adjust the concentration up or down by adding a few more or a few less tbsp of the concentrate. I recommend starting at a lower concentration (i.e. 2 tbsp/gallon of water) and working your way up based on an assessment of how effective the previous spraying was. Always spray in early morning or late afternoon when the temperatures are cool and the plants aren't getting direct sunlight. Otherwise, you risk burning the leaves. Now some final thoughts. If you find yourself using this product every week to keep critters under control, you should really examine your cultural practices. In a healthy garden, the plants should be able to ward off most infestations and there should always be predators (i.e. good bugs like spiders and lady beetles) roaming around that are munching on the bad bugs. I use this product no more than half a dozen times a season, when extraordinary circumstances (i.e. a heat wave) lead to an explosion of aphids and Mother Nature isn't able to keep up. Recent update: I had an ant infestation this year unlike anything I've seen before. There was a 200 feet trail of ants along my fence line and there were thousands of them going back and forth. Ants are known to shepherd aphids so getting rid of them was a priority. I used poison granules leftover from a previous application and all the ants did was shift their route by about a foot. I tried cinnamon. I tried corn meal. I tried boric acid. I tried vinegar. Nothing was working. I finally told my wife that I was going to pick up a can of Raid on the way home from work. But then I wondered if insecticidal soap would get rid of the ants since they don't have a shell and are considered a soft bodied insect. So I made a super concentrated solution (2 Tbsp w/32 oz water) and sprayed the ants along the path. To my amazement, the ants died on contact. This stuff worked as good as Raid!
Review: Effective for Controlling Thrips - I’ve been using this insecticidal soap concentrate to treat a thrips outbreak, and it’s worked well. After mixing it as directed and applying it consistently, I noticed a reduction in the number of pests. I used it with a 360° sprayer, which made it much easier to thoroughly coat the undersides of the leaves where thrips tend to hide.

## Features

- GENTLE ON MOST PLANTS - This aphid spray is ideal for use on flowers, herbs, vegetables, houseplants, lawn, tree, shrubs, and more
- PROTECT PLANTS FROM INSECTS - Insecticidal soap concentrate kills a variety of soft-bodied insect pests, including aphids, mealybugs, whiteflies, leafhopper, spider mites, and more
- USE PLANT SPRAY THROUGHOUT THE SEASON - Spray at the first sign of damage and every 5-7 days while insects are present, can be used up until the day of harvest
- PEACE OF MIND – This plant spray for insects is OMRI Listed and compliant for use in organic gardening so you can use it without worry
- GARDEN INSECT KILLER - Potassium salts of fatty acids weaken insects' outer shell, dehydrating them and killing on contact
- Insect killing soap concentrate
- Targets and kills aphids, earwigs, grasshoppers, harlequin bugs, leafhoppers, mealy bugs, mites and plant bugs
- Also kills psyllids, sawfly larvae, soft scales, spider mites, squash bugs, blossom thrips and whiteflies; economical and convenient solution
- Does not kill beneficial insects and can be used up until the day of harvest
- OMRI Listed and compliant for use in organic gardening

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Active Ingredients | Potassium Salts of Fatty Acids |
| Brand | Safer |
| Item Form | Spray |
| Item Weight | 16 ounces |
| Liquid Volume | 16 fluid ounces |
| Target Species | Insects |

## Product Details

- **Active Ingredients:** Potassium Salts of Fatty Acids
- **Brand:** Safer
- **Item Form:** Spray
- **Item Weight:** 16 ounces
- **Liquid Volume:** 16 fluid ounces

## Images

![5118-6 Insect Killing Soap Concentrate - Insecticidal Soap for Plants - Kills Aphids, Whiteflies, Thrips, Spider Mites, and More - OMRI Listed for Organic Use - Image 1](https://m.media-amazon.com/images/I/8139Ysmw+NL.jpg)

## Available Options

This product comes in different **Style** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great product, kills just about any soft bodied pest (including ants!!!)
*by H***R on May 27, 2013*

I use this product primarily to keep aphids off my broccoli, cabbage, onions, kale, and plum tree. So far, I've had a lot of good success with it and it hasn't damaged my plants like some other products that I've used in the past. There's a couple of tricks to this product. First, most of the pests congregate on the bottom-side of leaves so you need to have a strategy to access and spray the bottom-side. Spraying the topside of the leaves is a waste of time and won't do anything for you. My method of getting to the underside of the leaves without being a contortionist is to use a pump sprayer that has a wand with an angled tip. Second, don't be cheap. Once you access the underside of the leaves, give them a good spray and make sure all critters are fully soaked. Ever notice how your hands feel dry if you wash them often with soap? That's exactly how this product works...it "dries out" the critters. That's why it's so important to make sure the critters are fully soaked. As an added bonus, I've realized that this product can also kill soft bodied caterpillars that also love to chew on most plant leaves. I've successfully used this product on my apple and cherry trees to get rid of caterpillars; the only trick is that you have to catch the critters in the act. That said, if you have a heavy caterpillar infestation, you're better off using BT instead of this product. Safer Brands offers a BT formula that I use and is very effective if you have lots of caterpillars around. Buying the concentrate is the way to go from a $$ perspective. It's not that hard to make a spray solution. I use 2-4 tbsp of the product in a 1 gallon pump bottle and then fill it up to the top with water. Shake well and you're ready to go. A funnel is not necessary but certainly makes it easier to fill the bottle without getting the concentrate or water everywhere. Depending on the level of infestation you have, you can adjust the concentration up or down by adding a few more or a few less tbsp of the concentrate. I recommend starting at a lower concentration (i.e. 2 tbsp/gallon of water) and working your way up based on an assessment of how effective the previous spraying was. Always spray in early morning or late afternoon when the temperatures are cool and the plants aren't getting direct sunlight. Otherwise, you risk burning the leaves. Now some final thoughts. If you find yourself using this product every week to keep critters under control, you should really examine your cultural practices. In a healthy garden, the plants should be able to ward off most infestations and there should always be predators (i.e. good bugs like spiders and lady beetles) roaming around that are munching on the bad bugs. I use this product no more than half a dozen times a season, when extraordinary circumstances (i.e. a heat wave) lead to an explosion of aphids and Mother Nature isn't able to keep up. Recent update: I had an ant infestation this year unlike anything I've seen before. There was a 200 feet trail of ants along my fence line and there were thousands of them going back and forth. Ants are known to shepherd aphids so getting rid of them was a priority. I used poison granules leftover from a previous application and all the ants did was shift their route by about a foot. I tried cinnamon. I tried corn meal. I tried boric acid. I tried vinegar. Nothing was working. I finally told my wife that I was going to pick up a can of Raid on the way home from work. But then I wondered if insecticidal soap would get rid of the ants since they don't have a shell and are considered a soft bodied insect. So I made a super concentrated solution (2 Tbsp w/32 oz water) and sprayed the ants along the path. To my amazement, the ants died on contact. This stuff worked as good as Raid!

### ⭐⭐⭐⭐⭐ Effective for Controlling Thrips
*by K***S on August 3, 2026*

I’ve been using this insecticidal soap concentrate to treat a thrips outbreak, and it’s worked well. After mixing it as directed and applying it consistently, I noticed a reduction in the number of pests. I used it with a 360° sprayer, which made it much easier to thoroughly coat the undersides of the leaves where thrips tend to hide.

### ⭐⭐⭐⭐ Works Well When Diluted Properly
*by D***C on June 27, 2026*

I bought this to get rid of aphids on my squash leaves, and it did exactly what I needed it to do. The aphids are dead, the plants are still thriving, and the pollinators are still visiting, so that checks all the important boxes for me. The key is proper dilution. A little goes a long way: 2.5 oz makes a full gallon, which surprised me because the bottle looked small at first. Once I mixed the first batch, I realized this may last me most of the summer. I also didn’t need to spray heavily. It worked from the first application, and the follow-up sprays were much lighter because many of the aphids were already gone. My only caution is that the leaves can burn if the product is applied too frequently or mixed too strong, so this is not a “more is better” situation. Follow the dilution instructions and use a measured hand. Overall, I’m pleased with the results and would buy it again. Effective, economical, and organic-garden friendly when used correctly.

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-08-15*