- 1 Quick Comparison of Best Insecticidal Soap for Plant
- 2 What is insecticidal soap and How It works?
- 3 Best Insecticidal Soap Spray Reviews- Top picks
- 3.1 1.Safer Brand 5118 Insect Killing Soap- Best for Flower(Roses, Knockout Roses)
- 3.2 2.Bonide Insecticidal Soap Concentrate- Best for Citrus Plant
- 3.3 3.Garden Safe Brand Insecticidal Soap(24 oz) –Best Insect Killer for Houseplants
- 3.4 4.Natria 706230A – Best for Nightshade plant (Tomato)
- 3.5 5.Espoma Organic Earth-Tone Insecticidal Soap- Best for Spider Mites and Thrips
- 3.6 6.Natural Guard Spinosad Soap- Best Spinosad Insect Control Spray
- 3.7 7.Miracle-Gro Nature’s Care Insecticidal Soap – Best for Caterpillar Insets
- 3.8 #Bonus: Best Soap for Making Insecticide at Home
- 4 Precautions and Tips
- 5 Frequently Asked Questions
- 5.1 #What is the Best Time to Apply Insecticidal Soap
- 5.2 #How often Can You Spray Insecticidal Soap?
- 5.3 #Is Insecticidal Soap Safe and Organic?
- 5.4 #Does Insecticidal Soap Kill Spider Mites?
- 5.5 #Insecticidal Soap with Pyrethrin or Neem oil
- 5.6 #Insecticidal Soap vs Neem Oil
- 5.7 #Where to Buy Insecticidal Soap?
- 6 How to Choose The Best Organic Insecticidal Soap for the Plant
- 7 Some Others Popular Brands of insecticidal Soap
- 8 Conclusion
Who doesn’t like the organic method to get rid of insects? There are tons of organic products or recipes for the plant. Insecticidal soap is one of them. Yes! You can use insecticidal soap or any natural soap to remove the insect from your garden. But doesn’t all the soap contain any harsh chemicals? Remember just saying organic soap won’t make the soap in organic soap.
So, How would you know what is the best insecticidal soap? You have to buy different insecticidal soap and do some experiments on your plant to get the best organic insecticidal soap.
Don’t worry! You don’t have to anything. I have researched and found the best insecticidal soap for your plant.
Quick Comparison of Best Insecticidal Soap for Plant
|Insect Killing Soap||Volume||Price|
|Safer Brand 5118 Insect Killing Soap(Best overall)||16 oz|
|Bonide Insecticidal Soap Concentrate||32 oz|
|Garden Safe Brand Insecticidal Soap||24 oz|
|Natria 706230A Insecticidal Soap (Best Value)||24 oz|
|.Espoma Organic Earth-Tone Insecticidal Soap||24 oz|
|Natural Guard Spinosad Soap||16 oz|
|Miracle-Gro Nature’s Care Insecticidal Soap||24 oz|
What is insecticidal soap and How It works?
Insecticidal soap is potassium based long-chain fatty acid that can kill the soft-bodied insect. The main ingredient of soap is Potassium laurate. Insecticidal soap is also known as horticultural soap. It can use as a spray or soil drench in any stage of plants including flowering stage.
The long-chain fatty acid extract from coconut, plum, lavender and other plant oil. Short-chain fatty acids can also use to making insecticidal soap. But it may cause phytotoxicity.
How does insecticidal soap work?
Insecticidal soap works in many ways. The main mechanism is it can disrupt the insect cuticle when it contacts the insect body that dehydrating the insect by evaporation and the insect dies.
Another possible mechanism is-
When the liquid soap comes in contact with the insect trachea.it blocks or disrupts the trachea. That’s why insects can’t open trachea and die.
Best Insecticidal Soap Spray Reviews- Top picks
1.Safer Brand 5118 Insect Killing Soap- Best for Flower(Roses, Knockout Roses)
Safer Brand 5118 insect killing soap (16-ounce concentrate) is mostly used to kill spiders mites, aphids, fuller rose beetles, thrips on roses, knockout roses or other flowering plants. Besides, it is also widely used to kill other insects (see the affected insect list on amazon) on trees, shrubs, fruits, vegetables. Ornamental foliage and houseplants like the fern, rubber, aloe vera, pothos, bamboo, broccoli, cabbage, and onions without harming your family and pets.
This is a long-standing and powerful insecticide that derivate from natural ingredients. It contains 50% potassium salt fatty acid and seaweed extract that can weaken the insect’s waxy coat of the cell membrane quickly.
Many indoor gardeners don’t like to use insecticidal soap for its soapy smell. Good news; It hasn’t any kind of harsh smell of soap and also dries quickly.
It is also approved as an organic insecticide by OMRI(Organic Materials Review Institute) and NOP(National Organic Program).
Though the manufacturer claims it doesn’t kill the beneficial insect. But as far I know, insecticidal soaps are non-selective insecticide. In my opinion, apply when you won’t notice honey bee or other beneficial insect activities.
How to use Safer Brand insecticidal soap?
Mix 4 tbsp of concentrate into a gallon of water and spray on your plant. Wait 7-10 days to reapply if needed. Don’t store the solution for future uses. This insect-killing soap can store for years unopened and one year once opened. You should try this trusted and proven remedy to kill the harmful insects of your garden.
2.Bonide Insecticidal Soap Concentrate- Best for Citrus Plant
The Bonide insecticidal soap concentrate can be used houseplants, vegetables, flowers, fruits greenhouses, ornamental, nut Trees, citrus(lemon, pomelo, orange, citron), berries, and Shrubs. Basically, It almost safe for all plants except sweet peas, nasturtiums, delicate ferns. It is also NOP listed organic product for gardening.
It is very effective to get rid of insects like scales, plant bugs, sawfly larvae, psyllids, tent caterpillars, thrips, ants, spider mites, adelgids (woolly aphids), aphids, lace bugs, mealybugs, mites, grasshoppers, leafhoppers, earwigs and whitefly. It is also effective to eradicate insects at any stage ( adult, larval, Nymph and pupal stages of some pests).
It has 47% potassium salt fatty acids as the active ingredient and has no flammable substances that make it suitable for the greenhouse plant but has a very little smell that is not noticeable.
You can use this insecticide before the day of harvesting. You don’t have to worry about the poisons. Using the Bonide insecticidal soap is completely healthy and environment-friendly.
How to apply Bonide insecticidal soap?
Mix 4 teaspoons of soap in 1 quart of water. Pour the mixer into a spray bottle and spray plant parts. Repeat the process weekly or bi-weekly to get an insect-free garden.
3.Garden Safe Brand Insecticidal Soap(24 oz) –Best Insect Killer for Houseplants
Garden safe is another trusted brand for organic products. They provide OMRI certified insecticidal soap since 2002.
The perfect concentration, not having the soapy smell and quick-drying quality make it the most used and recommended insecticidal soap for houseplants. Also, the active ingredients of Garden safe insecticidal soap made from plant derivated fatty acids.
Moreover, It also can apply different outdoor plants and greenhouses to kill different garden insects successfully. Especially it is very effective to get rid of aphids, mealybugs. It can also kill insects at different stages.
Want to know how to use Garden Safe insecticidal soap?
You don’t need to add water to make the final solution. It is ready to use spray and contains 1% active ingredients. Just shake well and spray on the affected plant. To get a quick and effective result, you can also spray the soap on the backside of leaves and soil.
4.Natria 706230A – Best for Nightshade plant (Tomato)
Natria 706230A soap is another ready to use insecticide that has 1% potassium salts of fatty acids. It is the best for kill aphids, mealybugs, spider mites, whiteflies, and other listed pests in a minute. It is a multipurpose insect killer that can kill listed insects in different stages on vegetables, houseplants, greenhouse plants, ornamentals, fruit, seed and nut trees.
Big news: this non-synthetic soap works very fast and very gentle to the plants. It also acts as a preventive bio fungicide. So that it can prevent many important diseases cause of the fungus. Moreover, It has no smell and perfect for your houseplant.
It is also ready to use insecticide that contains 1% active ingredient of potassium fatty acids.
How to use Natria insecticidal soap?
Shake the container before spray and apply directly to the plant. For better and effective results,apply the back of the leaves.
5.Espoma Organic Earth-Tone Insecticidal Soap- Best for Spider Mites and Thrips
Espoma is another OMRI listed brand that produces good quality organic products for the plant. Soap based insecticide is one of the hot cake product of them. This 24 oz Espoma soap contains 1% of long-chain plant potassium fatty acid. It has zero percent of animal fat and short-chain fatty acid. That’s why it is safer for leafy vegetables and bedding plants.
Besides, It also kills the different insects (e.g aphids, mites, lace bugs, grasshoppers, scale insects, earwigs whitefly, slugs, caterpillars, etc) of trees, vegetables, fruits, citrus, and ornamental plants. Moreover, Espoma is also suitable for indoor plants and greenhouse because of not having any harsh smell.
I applied on my basil plant to get rid of white spots that cause of insects. I worked without any harm.No need to add water before spray. Just shake and spray on the plant.
6.Natural Guard Spinosad Soap- Best Spinosad Insect Control Spray
Spinosad is a natural compound made by the bacterial species Saccharopolyspora spinosa that highly toxic to insects. Natural Guard Spinosad Soap contains 0.940% of potassium slat fatty acid and 0.005% of spinosad.
It can be used to control aphids adelgids, ants, armyworms, beetles, borers, caterpillars, tent caterpillars, chinch bugs, codling moth, earwigs, fruit flies, gypsy moth, lace bugs, leafhoppers, leafminers, leafrollers, loopers, mealybugs, mites, mole crickets, plant bugs, psyllids, sawfly larvae, scale insects, spider mites, thrips, webworms, weevils, and whiteflies.
In my opinion, Natural Guard Spinosad Soap is the good aphids, whiteflies, and spider mites and other soft-bodied insects.
The special benefit of this soap-
It can use to kill insects from the lawn and also can control powdery mildew. To control this disease, apply on the infected areas when the first sign appears. It is ready to use insecticide. Just shake and spray to kill the listed insecticides.
7.Miracle-Gro Nature’s Care Insecticidal Soap – Best for Caterpillar Insets
Last but not the least, the insecticidal soap of my list-Miracle-Gro 0747210 RTU24. It another best fatty acid insecticide that has 1% potassium fatty acid as an active ingredient. Any soft-bodied insects will die within a minute if contact with the soapy water.
Is the bug damaging your tomato plants? or Is gnat kill your indoor plants? This OMRI listed organic insecticidal soap may be the best solution for you. Moreover, it can kill other listed insects very quickly.
How to use Miracle-Gro insecticidal soap?
Simply, shake the bottle and spray it on the whole plant. Repeat the process after 7 days if you notice insects on the plants.
#Bonus: Best Soap for Making Insecticide at Home
The homeowner always likes to use their kitchen products to use in their gardens. This is why I want to recommend a few general natural soaps for homemade insecticide. Concentration is the main problem of the homemade insecticidal soap. But you can fix the concentration by applying first on a small plant part.
Here is the recommended Soap for homemade insecticidal Spray-
- Bronner’s – Pure-Castile Liquid Soap
- Earth Friendly Products ECOS Dishmate Dishwashing Liquid
- Murphy’s Oil Soap
- Marseille Soap Marius Fabre
To learn more about DIY insecticidal soap spray, see my article about how to make insecticidal soap spray at home.
Precautions and Tips
- Do not use the insecticidal soap on sweet peas, jade plant, lantana, nasturtiums or delicate ferns.
- Some varieties of different family plants like azaleas, begonias, camellias, fuschias, gardenias,
orchids and impatiens have shown sensitivity. If wilting occurs after a few hours of application, spray water and rinse the plant.
- It is a contact insecticide, so apply such a way that insect comes in contact with the insecticide.
- Shake the solution well before spray.
- Don’t apply during the full sun.
- It causes temporary eye injury and skin irritation. So wear protective goggles and apron.
- If the soap gets in your eye, hold eyes open and rinse gently with clean water for a few minutes.
- Spray the insecticide in the evening when the beneficial insect(bee) activity is low.
- Is it kill moths, worms and May I apply on rubber plant or bonsai? People are always asked this type of question. Honestly speaking, the manufacturer can’t answer the question confidently if the plants and insects do not remain on their list. That’s mean it doesn’t work on those insects.
- Don’t use just the upper leaves.apply also undersides of the leaves.
- Repeat the treatment weekly or bi-weekly, If needed.
Frequently Asked Questions
#What is the Best Time to Apply Insecticidal Soap
As I already told, Insect will come to contact with the insecticidal soap to kill them.
You have to spray when the temperature is cool and the weather is calm. As if there was no angry sun over the plant. So, the plant stays wet for a longer period of time. Considering this fact, early morning or the evening( before 6 am or after 5 pm) is the best time to apply insecticidal soap.
Moreover, You may apply directly to the insect when you will notice the insect activity increases on the plant.
#How often Can You Spray Insecticidal Soap?
Insecticidal soap can kill the insect when it contacts the insect. So you have to repeat the application process. You can repeat the process after 1 weak if you appear any sign of insect infestation.
#Is Insecticidal Soap Safe and Organic?
The quick answer- Yes! it is organic and safe if you apply the solution with proper concentration. But the answer doesn’t end here. Many homeowners or gardeners ask-is it safe for pets, human, honey bees? or is it safe for a succulent?
Insecticidal soap doesn’t harm humans and pets. It is not toxic insecticide to humans and other mammals. But it may cause temporary skin irritation.
Though many gardeners claim that the insect killer soap doesn’t harm honey bee, but this is not authentic information. So apply insecticidal soap when the honey bee is less active(early morning and the evening).
Some varieties of succulent can burn. Don’t apply soap spray without testing. (learn more from insecticidal soap label)
#Does Insecticidal Soap Kill Spider Mites?
Insecticidal soap can kill any soft-bodied insect. Every brand provides a list of affected insects. Here I will tell you name of some common soft-bodied insects these are affected-
Spider mites, Whiteflies, Thrips, Caterpillars, Mealybugs, Jumping insects, Earwigs, Aphids, Beetles, Sawflies, Fungus Gnats, Ants, Squash Bugs, Box Elder Bugs, etc.
The quick tips- Observe the insect. If it has a soft body, then definitely the spray will work. So, stop asking the question like- will insecticidal soap kill thrips or ants?
#Insecticidal Soap with Pyrethrin or Neem oil
It is safe to add neem oil or pyrethrin into the insecticidal soap. Pyrethrin and Neem oil also act as insecticide individually. So gardeners add these into soap spray to enhance the activity.
The safer brand provides insecticidal soap with pyrethrin that you can pick- Safer Brand Insecticidal Soap & Pyrethrin Concentrate, 32-Ounce.
#Insecticidal Soap vs Neem Oil
Insecticidal soap and neem oil can suffocate and kill if the insects come in contact. Both can kill some common soft-bodied insects. Moreover, soap can kill some insects that neem oil can’t and neem oil can kill some insect these are not affected by the insecticidal soap.
Both are organic and safe if the concentration is perfect. So, the best idea is to mix neem oil and insecticidal soap. But don’t apply to the plant without experiment. Dilute the solution if plant burn.
Here is the recommended best quality neem oil- Bonide (BND022) – Ready to Use Neem Oil
#Where to Buy Insecticidal Soap?
I have mentioned 5 insecticidal soaps that best-selling products under the organic insecticide category on amazon. You can purchase any of these from my list.
Moreover, You can buy from near horticulture store or insecticidal store. But before buy from there you must consider a few things to pick the best one.
How to Choose The Best Organic Insecticidal Soap for the Plant
Insecticidal soap is the most popular insect repellent among the organic garden. It is a very eco-friendly and effective product. I have already mentioned 5 insecticidal soap for you. You may purchase any of these. But what you have to consider if you buy insecticidal soap from a horticultural soap.
Certified or Non-certified
You must consider that the insecticidal soap is certified by OMRI(Organic Materials Review Institute) or NOP(National Organic Program).OMRI and NOP are the non-profitable organic product review organization. They determine and certify the product as organic.
Harsh Substance or Chemical
Insecticidal soap is a biodegradable natural product. It should not contain any harsh chemicals that can harm the plant.so before choosing the insecticidal soap, you have to consider what substance it contains.
Different brand soap can affect different insects. The brand provides a list of the affected insects. If you need an insecticidal soap to get rid of specific insects, you need to check whether the name of the insect remains in the list or not.
The concentration of the Soap
Some brand provides high concentration soap. You need to mix water before use. For example-Safer brand insecticidal soap.
On the other hand, some brand provides readily useable low concentred soap. You don’t need to water before use. For example- Natria insecticidal soap.
Some people ignore insecticidal soap for its bad smell. But all the insecticidal soap doesn’t have a bad smell like soap. You have to consider this feature before buy. Though this feature is most considerable for you if you want to buy an insecticidal soap for indoor plants or a greenhouse.
Not Harmful for the Pets
Many gardeners forget to consider this important thing before buying or applying any insecticide or fertilizer. Some substances can harm your pets. So you have to make sure that the insecticidal soap won’t harm your pests.
Some Others Popular Brands of insecticidal Soap
I have already mentioned 7 best brands of insecticidal soap. Besides these, some other brands are also popular among gardeners. For your help, I have mentioned the name too-
- Kopa insecticidal soap
- Schultz insecticidal soap
- Ortho insecticidal soap
- Green Earth insecticidal soap
- Rose Pharm organic insecticidal soap plus Miticide and Fungicide
Lastly, I want to tell you never apply any insecticide without a test in the small part of your plant. Because some of the plants are so sensitive. It is not a wise idea to kill the plant instead of the plant. Also, read carefully the label of insecticide.
I hope this article can help you pick the best insecticidal soap for your garden.