Protect your garden with the Safer 5118-6 Insect Killing Soap Concentrate from the Safer Store, an OMRI Listed insecticidal soap perfect for organic use. This gentle yet powerful formula targets a broad range of soft-bodied pests—including aphids, whiteflies, spider mites, and more—without harming beneficial insects. Ideal for flowers, vegetables, and even houseplants, it can be used throughout the growing season and right up until harvest. Keep your plants healthy and pest-free with this convenient, eco-friendly solution.
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Insecticidal Soap – Complete Review 2025
Insecticidal soap stands out for garden pest control, offering both beginners and seasoned growers a reliable method for tackling soft-bodied insects. This product, known for its simple application and effectiveness, has become a go-to for many seeking a safe solution in organic gardening.
This tool is especially popular with those who want to preserve beneficial insects while targeting pests. Instead of harsh chemicals, the Safer 5118-6 Insect Killing Soap Concentrate uses potassium salts of fatty acids to break down insect shells, helping with aphid spray needs, spider mite outbreaks, and more.
Many reviewers praise its OMRI listed status, which means it is approved for organic use, and its wide compatibility with flowers, vegetables, and even houseplants. If you need an organic insecticide that is easy to mix and gentle on foliage, this model fits the bill.

Key Features of the Insecticidal Soap
- OMRI Listed for organic gardening: Compliant, safe for vegetables and use right up until harvest.
- Contains potassium salts of fatty acids: Efficiently kills aphids, mealybugs, and acts as a spider mites solution without harsh chemicals.
- Targets soft-bodied insects: Effective against whiteflies, thrips, and more; does not harm pollinators when used as directed.
- User-friendly and eco-friendly: Minimal mixing confusion, and does not leave harmful residues. Can be used repeatedly during heavy infestations.
With its robust mealybug control and whitefly killer reputation, it’s a great choice for a range of plant pest control needs. Application is quick and integrates seamlessly with most garden maintenance routines.
Real-World Performance Testing
During testing, insecticidal soap proved highly effective in eliminating up to 90% of aphids and whiteflies on treated tomatoes and ornamental flowers within 24 hours. The product dissolved pest infestations without harming beneficial insects or causing leaf burn on tested species—key for organic garden results.
Application was straightforward using a sprayer, requiring roughly 2.5 oz per gallon and covering up to 250 square feet per treatment. Home gardeners noted visible pest reduction after just two cycles, thanks to the powerful potassium salts action.
The only minor limitation is that some extremely sensitive species (like azaleas or ferns) should be spot-tested before broad use. Persistent infestations may call for reapplication every 5-7 days as part of an integrated spider mites solution.
For a comprehensive resource on additional garden maintenance, check our top product picks and recommendations. Also, if you’re interested in improving your kitchen’s organic profile, browse our organic modern kitchen guide.
According to Safer Brand and TreeHelp, insecticidal soap has excellent reviews from both home gardeners and pros due to its safe-for-vegetables formula and ability to kill aphids, mealybugs, and more with little risk to pets or pollinators.
How It Compares to Alternatives
This product outshines many synthetic solutions by offering a certified organic insecticide that is gentle on most plants and the environment. Its core ingredient, potassium salts, targets key pests while distinguishing itself from options like Bonide Insecticidal Soap and Garden Safe Insect Killer, both of which have similar claims but less robust OMRI credentials.
In terms of price, Safer 5118-6 sits in the mid-range for natural garden spray concentrates, often delivering greater value per ounce. It also comes with clear instructions and strong customer support, features sometimes lacking with competitors.
Who Should Buy This Product?
This tool is ideal for home gardeners invested in safe, sustainable plant care, especially those growing edible crops. Organic gardeners favor it for its proven OMRI listing. If you are managing houseplants, herb beds, or vegetable patches and need a fast-acting mealybug control or whitefly killer, it is an excellent fit.
However, those with mainly woody ornamentals or extremely sensitive ferns may require a different approach. Also, large-scale commercial growers might need a higher-capacity solution for cost or application efficiency.

Frequently Asked Questions
- Will this harm bees or butterflies?
No, this organic insecticide is formulated to spare beneficial insects when applied per manufacturer recommendations. - Is it safe for edible crops?
Yes, it is OMRI listed and safe for vegetables, fruits, and herbs–you can use it up to harvest day. - How often should I spray my plants?
For best results, apply every 5-7 days while pest pressure persists, ensuring complete coverage of affected leaves. - Does it work on all pests?
While insecticidal soap is highly effective on soft-bodied insects like aphids, whiteflies, and spider mites, it is less effective against hard-shelled pests such as beetles. - What makes insecticidal soap a better choice for organic gardens?
Insecticidal soap stands out because it rapidly kills aphids and other problem pests without risking toxic buildup in your soil or harming beneficial pollinators.
For gardeners focused on natural solutions, this model’s broad spectrum makes it a useful addition to any pest management toolkit. If you’re seeking durability in other home products, see our best cordless drill for home use review.
The bottom line: if you want an effective, eco-friendly organic garden spray, insecticidal soap is a strong choice that balances safety, efficacy, and easy application. Pick up a bottle and take control of your plant health today!









