The Best Insecticide of 2021

Anyone who works in the garden knows that insects are the worst enemy of the plants. These flying and slithering insects destroy all your vibrant and beautiful plants making your yard look terrible. And it is a nightmare to see your beloved plant infested with some really scary bugs like aphids, whiteflies, and mites. This is when you been the best insecticide you can get.

Regardless of it you already have insect infestation or you are trying to protect against one and be as prepared as possible it is a really good idea to have some insecticide on hand.

Here is a quick list of the best insecticide brands we use.

Southern Ag 10401 Natural Pyrethrin Concentrate


Pyrethrin concentrate is an organic insecticide made from a relative of the chrysanthemum. This stuff can kill aphids, webworms, whiteflies, beetles, and many other insects on vegetables, trees, and ornamental plants. It contains Pyrethrin, one of the best active ingredients against insects and pests, making it an ideal insecticide.

It works quickly, usually within an hour after being applied. All you need is to mix it in water and spray it on the plant. This incredible stuff will kill insects by directly targeting their central nervous system, quickly degrade it, and leave your plant safe and sound.

Amazingly, we have read stories of people using it on humans and pets to control insects like fleas, mites, lice, flies, gnats, and even mosquitoes.

Another amazing thing is that you really don’t need a ton of this stuff to have a big effect. For vegetables and ornamental plants, 2/3 – 2 teaspoons per gallon of water is sufficient to kill all the flying and slithering insects in your yard. It is recommended to read the instruction before application; otherwise, it could be harmful if used in excessive amounts.

If you decide to use a more toxic something that can protect you from the harmful effects of more toxic insecticides is the use of a great pair of gardening gloves, here check out the list of best one.


  • Size: 8oz
  • Weight: 8 ounce
  • Dimension: 1.75 x 3.05 x 5.3 inches
  • Active Ingredients: Pyrethrin and Piperonyl Butoxide
  • Manufacturer: Southern Ag


  • Fats and effective formula quickly kills the insect by directly targeting their nervous system
  • Less toxic, hence, can also use on pets and human
  • Eco-friendly
  • Can also use for outdoors and indoors
  • Made from naturally-occurring Pyrethrin which makes it Ideal to kill insects like aphids, whiteflies, worms, wasps, and even mosquitoes
  • Contain Piperonyl Butoxide make it more effective against pests


  • Not ideal for beetles
  • Small bottle
  • Not suitable as a flea dips on dogs


Natria 706240A Organic Plant Protection Neem Oil Concentrate

Natria Neem Oil

If you have a beautiful garden full of roses, fruits, and vegetables, but infested with destructive flying and crawling insects, then this is the best concentrates to rescue your garden. This excellent plant protection concentrate from Natria uses Clarified Hydrophobic Extract of Neem oil as an active ingredient and listed from OMRI for organic gardening.

Neem oil is a non-toxic chemical that is extracted from the fruit and seed of the Neem tree. It not only kills insects and pests but also control many plant diseases. Hence, Natria Neem Oil Concentrate is a perfect insecticide to control insects, pests, and other plant diseases such as black spots, rust, and powdery mildew.

It is an easy-to-use option to stop the sucking insects from destroying your garden. Just mix the 1-2 fluid ounce of Natia concentrate with 1-gallon of water in a spray bottle and thoroughly spray all plants surface until completely wet. Only one application will kill all the destructive insects, and after a few days, your flower will bloom, veggies will flourish, and flowers will spring back to life. Moreover, you can also use it up to the day of harvest.


  • Size: 24oz
  • Weight: 1.65 pounds
  • Dimension: 2.65 x 4.71 x 8.72 inches
  • Active Ingredients: Neem Oil
  • Manufacturer: SBM Life Science


  • Contain Neem Oil as an active ingredient; making it ideal to use for organic gardeners
  • Excellent dor controlling insects, pests, and many plant diseases
  • Specially made to use on roses, flowers, fruits, and vegetables
  • Listed from OMRI for organic gardeners
  • You can also use it on orchids
  • Available at relatively affordable price


  • Highly active but works slower on roses
  • Not 100% Neem Oil


Bonide – All Seasons Horticultural and Dormant Spray Oil

All Seasons Spray Oil

Bonide has been a trusted brand since 1926 and All Seasons Horticultural and dormant spray is also another excellent product from this renowned brand. We know this one is a little on the expensive side but this fantastic insecticide is a multi-purpose spray use for insect control, disease prevention, and overall protection.

All season spray oil contains a particular type of paraffinic mineral oil as an active ingredient, very similar to the stuff you find in paraffin wax. It is non-toxic, which means you can safely use it around people and pets. Moreover, this fantastic spray is also used for providing year-round protection to your plants against harmful insects such as aphids, scale insects, adelgids, mites, mealybugs, and certain moth species. Besides, it also controls plant diseases by combating against powdery mildews, rust, greasy spot, and botrytis.

What’s really cool is you can spray it on the plant at any time during the growing season; whether it is a dormant stage, green tip stage, or even delayed dormant stage, and it will work.

Interestingly, it not only protects your garden but also shields greenhouse plants from certain insects and pests. All you need is to mix a few teaspoons from the 16-ounce bottle in a gallon of water and gently spray it on the plants. And you will see this auto-emulsifying oil will work like magic, all the destructive insect will flake away right off- dead and gone. Most importantly, it is highly concentrated, so always follow the instruction on the label before application; otherwise, you will damage vegetation.


  • Size: 16 oz
  • Weight: 1pounds
  • Dimension: 4 x 2.25 x 7 inches
  • Active Ingredients: Mineral Oil
  • Manufacturer: Bonide


  • Three-in-one product; provide insect control, disease prevention, and foliage protection
  • Contain superior type of non-toxic Paraffinic mineral oil
  • Safe to use around people and pets
  • Provide year-round protection; you can use it at any stage of the growing season
  • Highly concentrated insecticide
  • Fast and effective against a specific type of insects and mites


  • Using too much can burn the vegetation
  • Some customers complain about the broken seal of the bottle


Mighty Spider Garden Insecticide Spray

Mighty Spider Garden Insecticide Spray

We know spider mites are a real pain for gardeners, as these tiny insects can destroy your whole plant by their piercing-sucking mouthparts. Rescue your garden by using Mighty spider insecticide spray from NPK industries. As the name shows, Mighty spider is specially made for irritating spider mites, broad mites, and russet mites infesting your plants. This fast-acting spider mite killer effectively demolishes all spider mites, allowing your plants to spring back to life.

This incredible insecticide kills all the accessible stages of spider mites, including those pesky eggs and protects your garden from there adverse effects. Fill your favourite Gardner sprayer with the mixture and thoroughly spray on all parts of plants. And you will see, it will take on all those irritating, destructive spider mites, flourishing back your plants.

Mighty spider contains pyrethrin and canola oil as their active ingredients, making it an excellent insecticide to use for plants, indoor, outdoor, and green house plants. However, you should carefully read the instructions before using it, as it may damage the vegetation if used in excessive amounts.


  • Size: 1 gallon
  • Weight: 8.98 pounds
  • Dimension: 6.2 x 5.2 x 10.5 inches
  • Active Ingredients: Pyrethrin and Canola
  • Manufacturer: NPK Industries


  • The fast-active product specifically made to eliminate spider mites
  • Kills all stages of spider mites, reducing the chances of resurges of spider motes
  • You can use it for indoor, outdoor and greenhouse plants


  • Only effective against spider mites
  • Relatively expensive


Buyer’s Guide

If you are reading this, then you have read the above review of some of the best insecticides. However, picking one insecticide might be a little tricky and a little bit confusing. You have some options, and it’s challenging to choose the best one which matches your needs.

First of all, you should know what insecticide is because of many people confused with insecticides, pesticides and fungicides and they are very different. These three forms are interchangeable and use to control pests and plant-based diseases. However, they have different uses.

What are Insecticides?

Insecticides are pesticides used to control, kill, repel, harm or mitigate certain types of insects. However, they work in different ways; some directly attacks the nervous system, while others may damage their exoskeleton to repel them.

There are different types of insecticides in the market. Some are synthetically based, that contain toxic chemicals which can be harmful to humans, pets, plants, flowers, land, and the environment. On the other hand, some are botanical insecticides; they contain neutrally occurring chemicals extracted from plants and minerals. These insecticides are non-toxic and safe for humans and pets but harmful to insects.

These naturally occurring chemicals are Spinosad, Pyrethrin, and Neem Oil. However, some botanical insecticide may also use essential oils to repel insects like cedar, lavender, eucalyptus, pennyroyal, citronella, rosemary, peppermint and soybean oil. For example, Bonide BND210 Insecticide; it contains a superior type of paraffinic mineral oil to kills insect. 

Here we listed some naturally-occurring chemicals that are mostly use in botanical insecticides.


Spinosad is a natural substance extracted from a soil bacterium and is highly toxic to insects. It is a mixture of two chemicals called spinosyn A, and spinosyn B. Spinsoad has been registered in over 80 pesticides products by the US Environmental Protection Agency, since 1997. 

It is fast-active and highly effective against a wide variety of pests like spider mites, mosquitoes, thrips, leafminers, ants, whiteflies, and many others. It quickly kills the insect comes into contact by directly attacking their nervous system.


Pyrethrin is another naturally occurring insecticides extracted from chrysanthemum flowers. It is ideal for organic gardening because it is non-toxic and quickly disappear from the plant after demolishing the insects. Moreover, you can also use it on pets to control insects like beetles, flies, fleas, and ants.

Insecticides that contain Pyrethrin are highly effective and work quickly to knock down all the pests as soon as they come in contact. However, pesticides often contain a small amount of Piperonyl Butoxide, a toxic, non-organic chemical with it that makes the product more effective.

Neem Oil:

Neem Oil is a naturally occurring pesticide which is extracted from the fruit and seed of the Neem tree. It is yellowish-brown and has a bitter taste with a garlic sulphur smell. It is a highly effective insecticide use to kills or repels destructive insects and mites like aphids, whiteflies, snails, mealybugs, cabbage worms, gnats, moths, cockroaches, flies, mosquitoes and many other similar insects.

This compound control pests by ceasing their growth, prevent the larvae from maturing, intrepid mating behaviours and sometimes by coating the oil in the breathing holes of insects and kill them. However, it is non-toxic to birds, humans, and pets. Studies have shown that there is no cancer or other disease-causing result from its use. Moreover, Neem oil also has a dual function in the vegetable garden, both as a fungicide and pesticide.

Features to Look for in Insecticide for Gardens

Before buying an insecticide, it is crucial to consider some features like organic vs chemical formula, targeted pests, duration of efficacy and safety of the plant.

Organic vs. Chemical

The active ingredients in organic insecticide are extracted from natural resources such as plant, mineral and bacteria. They are highly effective against bugs but non-toxic to human and pets. So, consequently, you can use them for your home garden and pets to controls insects.

Although many of these may kill some beneficial bugs, but their short residual activity reduces the collateral damage. However, Organic insecticides are relatively expensive with a potential need to apply multiples time to eliminate the pests.

Chemical insecticides are derived from harsh chemicals and are typically faster, long-lasting, and cheaper than organic pesticides. They kill both beneficial and harmful bugs causing collateral damage. Moreover, they are highly toxic to animals, land, and environment. Therefore they can cause short term adverse acute as well as long term chronic health effects.

Targeted Pests

Before you go and buy an insecticide to eliminate unwanted insects from your garden, you’ll first need to learn what kind of they are. For this purpose, scrutinize your plant and notice the physical appearance of the insect you come across. Then it would help if you went through internet research or consult a horticultural specialist to get more information about the pests and the insecticide you need to get rid of them.


When insects are present at their growing stage or fully grow, it may be control by insecticide when they come into contact. But when the insect is at developing stages, the egg protects the insect from pesticide, and the problem resurges after a few weeks. Therefore, to eliminate insect, it is essential to use a long-lasting insecticide which can kill eggs of the insects. Otherwise, frequent applications will be needed to eradicate these destructive pests.


Although organic insecticides are gentler than chemical insecticides, some may contain potent ingredients that are not good for certain plants and animals. Many plants become weaken or even die if organic pesticides are used in too high concentration. Therefore, you’ll usually read the label to find out what sort of plant product is designed.

Liquid, Granular, and Dry Dust Application 

There are three types of insecticides applications. Each has its pros and cons. Therefore, it is imperative; you should know what kind of application is best for you. Liquid insecticides are fast-acting, readily deliver the active ingredients to the problem after application. They are straightforward to use, spray liquid insecticide directly on the infested plants roots, stem or leaf to control insects and pests.

Granular is broad-spectrum treatment insecticides, efficient to treat soil level garden pests. They are straightforward to apply, sprinkle the granules on the soil infested with pests. Granules insecticides are very useful, but they also destroy good bugs.

 Most of the dust insecticides are broad-spectrum treatments, but they are tricky to apply, especially on the lower leaves. However, gardening duster would be helpful to distribute the dust over the plant efficiently. Furthermore, they are easy to store, have a long shelf life and work effectively against the bugs.


By now, you not only have a great idea about insecticides but also know how they work and what points are taken into consideration when buying an insecticide for your garden. The guide outline will help you in purchasing the best insecticide to eliminate all the destructive insect not only from your yard but also from your house.

In my opinion, I would recommend the Natria Organic Plant Protection Neem oil Concentrate. It very fast and effective against insects, pests and many other plant diseases such as black spots, rust, and powdery mildew. Moreover, just one application will demolish all the sucking insect your garden, and after a few days, it will spring back to life. 

If you enjoy this article, I would recommend reading my article about the best gardening tips.

Recommended Articles