Does Sevin Kill Spider Mites? Spider Mites Instant Killer!

Yes, Sevin Ready to Use Spray is labeled to kill young spider mites. However, the Sevin concentrate solution is not effective on mites if you fail to catch the infestation earlier.  The effectiveness of this product on mites depends on the extremity of invasion and time of infestation.

The harsh chemical in this product is a chemical works by disrupting the nervous system of the spider mites, causing them to die. However, it is essential to use Sevin Spray correctly to avoid any adverse effects on your plants.

In this article, we’ll explore how Sevin can help combat spider mites and provide some tips on how to use it correctly and also the in-depth answer and analysis of does Sevin kill spider mites.

Read on to learn more about this powerful insecticide, and why it just might be the key to successfully ridding your garden of these destructive pests.

Identifying Spider Mites: Infestation Sign

Spider mites belong to arachnids that are too tiny in size. It becomes difficult to see with the naked eye. However, there are few signs to spot its invasion. You can identify them through the signs below:

  • They are usually red, brown, or yellow and have eight legs. 
  • They are often found on the underside of plant leaves and can be identified by the small webs they create.
  • Check the presence of tiny white or yellow specks on the leaves of your plants. These specks are actually spider mite eggs and can be a clear indication of an infestation.
  •  Tap the leaves of your plants onto a white piece of paper. If you see small moving dots, you may have spider mites. 
  • Sometimes the appearance of silvery webbing on the leaves is a clear indication
  • Stunted growth of vegetation and especially distorted leaves.

Does Sevin Spray Kills Spider Mites

Yes, Sevin kills spider mites because it contains the active neurotoxin carbaryl, which works by interfering with the nervous system of spider mites. When the spray drops fall on the body of mite spider mites,  the toxin carbaryl attack directly on the nervous system, eventually leading to the death of the insect.

Sevin Spray also has a residual effect, meaning it continues to work for several days after application, preventing new spider mites from infesting the plant.

Does Sevin Dust Kills Spider Mites

Sevin insecticide is available in both granular and liquid forms. In powder form, it is known as Sevin dust while in liquid form it is known as Sevin Spray.

Sevin dust is one of the most commonly used pesticides to control spider mites. This broad-spectrum insecticide is effective against a wide range of 500  listed insects and pests. However, whether Sevin dust is effective against spider mites depends on the severity of the infestation.

Sevin dust is effective if you catch the infestation earlier. It works best on young spider mites, not adults. It starts killing as long as it comes in contact with mites’ bodies. The strong chemical in it will dissolve the body of mites killing and affecting its nervous system first. You need to apply it directly to the affected areas. It works best on young spider mites, so it is essential to catch the infestation early.

does sevin spray kill spider mites

Which is Better to Kill Spider Mites: Sevin Dust Or Sevin Spray

Sevin spray is a liquid insecticide that you can spray directly onto your plants. It is easy to apply and can be more effective than Sevin dust because it can reach areas that are difficult to access. This spray is less harmful to bees and other beneficial insects than Sevin dust.

Sevin dust, on the other hand, is a dry powder that you apply directly to the affected areas. It is easy to sprinkle manually on a wide range of affected areas  However, Sevin dust can be messy and can easily be blown away by the wind. Additionally, Sevin dust can be harmful to bees and other beneficial insects, so you need to use it with caution.

Does SEVIN 500 Kill Spider Mites

Yes, Sevin 500 is a specific formulation of Sevin insecticide that is effective against a wide range of pests, including spider mites. However, like all Sevin products, whether it is effective against spider mites depends on the severity of the infestation and how well you apply it.

Seven 500 contains 50% carbaryl, which is the active ingredient to kill pests. It is a broad-spectrum insecticide labeled to kill more than 500 insects. It is available in plastic bags. 

How Long Does Sevin Take to Kill Spider Mites

After application, it takes three days to two weeks to completely kill the spider mites. This time varies with the severity of the infestation and how well you apply it. When you apply it on the affected area, it dries in an hour creating a protective coating around plants. This coating is waterproof. 

Sevin works best on young spider mites, so it is essential to catch the infestation early. If you apply Sevin to an infestation that is already advanced, it may take longer to see results.

How To Use Sevin Spray Effectively To Kill Spider Mites

Using Sevin spray for spider mite treatment is relatively easy. Here is a step-by-step guide on how to use Sevin spray effectively:

Step-1: Identify the affected areas

Inspect the area closely to identify an infestation. White specks on leaves and silvery webbing is a clear indication of this type of infestation.  To know the severity of the invasion closely inspects the area.

Step-2: Mix Sevin spray

Follow the instructions on the label to mix Sevin spray with water. It is essential to use the correct concentration of Sevin spray to ensure that it is effective against spider mites.

Step-3: Apply Sevin spray

Use a sprayer to apply Sevin spray directly to the affected areas of your plants. Be sure to cover both the top and bottom of the leaves to ensure that you reach all the spider mites.

Step-4: Repeat the process

 Repeat the process every seven to ten days until you have eliminated the spider mites completely.

What Insecticide Kill and Controls Spider Mites Instantly

There are several insecticides that can kill and control spider mites instantly. Here are a few options:

Organic  Insecticides: This organic insecticide containing Neem oil works by disrupting the life cycle of spider mites and preventing them from reproducing. It also suffocates the pests by coating them with oil.

Pyrethrin Containing Insecticides: Pyrethrin is an active chemical derived from chrysanthemum flowers and works by attacking the nervous system of spider mites. It is fast-acting and can provide immediate control of pests.

Carbyl Containing Insecticides: This chemical is very fast in dissolving the bodies of spider mites. It is present in Sevin Dust and Sprays. 

Wrap Up

Spider mites can be a significant problem for your plants, causing significant damage. Remember to always use Sevin spray and other pesticides with caution and to follow the instructions on the label carefully.


  1. “Spider Mites” by the University of California Statewide Integrated Pest Management Program
  2. “Insect Control: Horticultural Oils and Pesticides” by the University of Minnesota Extension:
  3. “Controlling Spider Mites with Insecticides” by the University of Kentucky College of Agriculture, Food and Environment:
  4. “Integrated Pest Management for Spider Mites on Ornamental Plants” by Texas A&M AgriLife Extension:
  5. “The Effects of Pesticides on Spider Mites” by the University of Massachusetts Amherst:

Lisa Marshall

Hi, This is Lisa Marshall. Lisa has been working with farmers for over thirteen years. It is his passion, hobby and profession. To facilitate other gardeners from her experience, she has decided to start this website to share her gardening experience with her plant lovers.

Recent Posts