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10 Best Caterpillar Killer 2025 in the United States

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Our technology thoroughly searches through the online shopping world, reviewing hundreds of sites. We then process and analyze this information, updating in real-time to bring you the latest top-rated products. This way, you always get the best and most current options available.

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Our Top Picks

#2

SUMMIT 021-6 Caterpillar and Webworm Control-Hose End, 1-, Quart, White & Fertilome Spinsosad Bagworm, Tent Caterpillar and Chewing Insect Control, RTS, Quart

Rating
9.6
Target Pests
Application Method

Most important from
2363 reviews

Target Pests
This product saved my kale and broccoli from pesky worms with just one application. It's a must-have for anyone seeking organic pest control.
Application Method
The nozzle was a bit tricky initially, but once figured out, it was easy to use. A couple of sprays and my garden was pest-free for the summer.

This caterpillar-killer product combines SUMMIT 021-6 and Fertilome Spinsosad, designed to control pests such as armyworms, sod webworms, loopers, bagworms, and tent caterpillars. SUMMIT 021-6 focuses on outdoor living applications, while Fertilome Spinsosad is user-friendly for a wide range of plants including citrus, fruits, vegetables, lawns, ornamental trees, shrubs, and flowers.

The product is versatile for various garden and lawn needs. The application method is straightforward, especially with the hose-end design for SUMMIT 021-6. Users are advised to follow standard precautions when handling pesticides. The residual effect isn't outlined, so reapplication might be necessary for effective pest control.

Rating
9.6
Target Pests
Application Method

Most important from
2363 reviews

Target Pests
This product saved my kale and broccoli from pesky worms with just one application. It's a must-have for anyone seeking organic pest control.
Application Method
The nozzle was a bit tricky initially, but once figured out, it was easy to use. A couple of sprays and my garden was pest-free for the summer.
#3

Hi-Yield (31333) 38 Plus Turf Termite and Ornamental Insect Control (1 gal)

Rating
9.4
Formulation
Target Pests
Application Method

Most important from
1512 reviews

Formulation
A bit tricky to measure for large mixtures, but a dedicated plastic cup marked with the ratio helps.
Target Pests
Effectively repels all insects and critters around the home, even in the deep country.
Application Method
Despite being potent and requiring careful handling, it worked very well for exterior applications.
Safety
Kills army worms and other creepy crawlers quickly, but is safe for frogs and lizards.
Residual Effect
Using it for two years in a row has saved our yard where other granular types failed.

The Hi-Yield (31333) 38 Plus Turf Termite and Ornamental Insect Control is a versatile outdoor insecticide that targets a broad range of pests, including caterpillars, mosquitoes, ants, beetles, cockroaches, and spiders. One of its standout features is its flexibility in application methods; it can be readily mixed with water and applied using a tank-type or power sprayer, making it convenient for large areas or spot treatments for immediate effect.

The liquid formulation ensures it is easy to mix and apply as needed. The product’s safety profile is designed for outdoor use only, which means it is not suitable for indoor pest control. Users must follow the detailed application instructions on the label to ensure effective and safe use. Its residual effect can help maintain pest control over time, but users may need to reapply based on the specific pest and environmental conditions.

One potential drawback is that it requires careful handling and precise mixing, which might be a bit demanding for users who are not experienced with such products. Additionally, the product’s weight and size make it less convenient for those with limited storage space or mobility issues. However, if you are looking for a comprehensive solution to manage various pests in your lawn or garden, this product offers robust performance and versatility. It’s best suited for homeowners who need a reliable, long-term pest control solution for outdoor areas.

Rating
9.4
Formulation
Target Pests
Application Method

Most important from
1512 reviews

Formulation
A bit tricky to measure for large mixtures, but a dedicated plastic cup marked with the ratio helps.
Target Pests
Effectively repels all insects and critters around the home, even in the deep country.
Application Method
Despite being potent and requiring careful handling, it worked very well for exterior applications.
Safety
Kills army worms and other creepy crawlers quickly, but is safe for frogs and lizards.
Residual Effect
Using it for two years in a row has saved our yard where other granular types failed.

Buying Guide for the Best Caterpillar Killer

Choosing the right caterpillar killer is essential for maintaining the health of your plants and garden. The right product will effectively eliminate caterpillars without causing harm to your plants, other beneficial insects, or the environment. To make an informed decision, you need to consider several key specifications that will help you select the best caterpillar killer for your specific needs.
Active IngredientThe active ingredient is the chemical or biological substance that kills the caterpillars. This spec is important because it determines the effectiveness and safety of the product. Common active ingredients include Bacillus thuringiensis (Bt), spinosad, and chemical insecticides. Bt is a natural bacterium that targets caterpillars specifically and is safe for other insects and plants, making it ideal for organic gardening. Spinosad is another natural option that is effective but can affect other insects. Chemical insecticides are usually more potent but can have broader environmental impacts. Choose an active ingredient based on your preference for natural versus chemical solutions and the specific caterpillar problem you are facing.
FormulationFormulation refers to the physical form of the caterpillar killer, such as liquid, powder, or granules. This spec is important because it affects how you apply the product and its ease of use. Liquid formulations are typically easy to apply with a sprayer and provide quick results. Powders can be dusted directly onto plants but may require more frequent application. Granules are often used for soil treatment and provide long-lasting protection. Choose a formulation based on your application preference and the specific needs of your garden.
Target PestsTarget pests refer to the specific types of caterpillars that the product is designed to kill. This spec is important because not all caterpillar killers are effective against all types of caterpillars. Some products are broad-spectrum and can target a wide range of caterpillars, while others are more specialized. Identify the type of caterpillars causing damage in your garden and choose a product that specifically targets those pests for the best results.
Application MethodThe application method describes how the caterpillar killer is applied to your plants or garden. This spec is important because it affects the ease and effectiveness of the treatment. Common methods include spraying, dusting, and soil application. Spraying is often the most effective for covering large areas and ensuring thorough coverage. Dusting can be useful for targeting specific plants or areas. Soil application is typically used for systemic treatments that protect plants from the roots up. Choose an application method that fits your garden setup and the extent of the caterpillar infestation.
SafetySafety refers to the potential risks the caterpillar killer poses to humans, pets, and the environment. This spec is important because you want to protect not only your plants but also your family and beneficial insects. Organic and natural products like Bt and spinosad are generally safer for humans and pets and have minimal environmental impact. Chemical insecticides may require more precautions, such as wearing protective gear and keeping pets and children away from treated areas. Choose a product with a safety profile that matches your comfort level and the specific conditions of your garden.
Residual EffectResidual effect refers to how long the caterpillar killer remains effective after application. This spec is important because it determines how often you need to reapply the product. Products with a longer residual effect provide extended protection and reduce the need for frequent applications. However, they may also pose a higher risk to non-target organisms. Shorter residual effects require more frequent applications but may be safer for the environment. Choose a residual effect duration that balances effectiveness with safety and convenience for your gardening routine.

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