10 Best Grub Killers 2025 in the United States

Scotts GrubEx1 Season Long Grub Killer is designed to protect lawns from grubs and other pests for up to 4 months with a single application. Its active ingredient, Chlorantraniliprole, is effective at killing grubs when they are young, preventing turf damage.

This product is a granular insecticide that is easy to apply by spreading it over a dry lawn in the spring or early summer. One 28.7 lb. bag can cover up to 10,000 sq. ft., making it suitable for larger lawns. Additionally, it controls other pests like caterpillars, chinchbugs, and Japanese beetles, offering broad-spectrum protection.

Users should be aware of its environmental impact, as Chlorantraniliprole can affect beneficial insects. The product is USDA-approved, ensuring it meets certain standards, and is manufactured in the USA by The Scotts Company LLC. Its ease of use is a plus, but careful timing of application is necessary for optimal results. While it is effective for a substantial area, users with smaller lawns might find the large bag size unnecessary.

Scotts GrubEx1 Season Long Grub Killer is a solid choice for homeowners looking to protect their lawns from grubs and other pests. It works effectively by targeting young grubs and can provide protection for up to four months with just one application. The product covers a generous area of 5,000 square feet, which makes it suitable for average-sized lawns. The active ingredient, Chlorantraniliprole, is known for its effectiveness against various pests, including caterpillars and chinchbugs, not just grubs. This broad-spectrum pest control feature is beneficial if you're facing multiple types of lawn pests.

One of the great strengths of this product is its ease of use. You simply apply it to a dry lawn during the spring or early summer, which coincides with the period when grubs are most vulnerable. This timing is crucial for maximizing its effectiveness, and it allows you to prevent significant lawn damage before it occurs. Additionally, it is produced by Scotts, a reputable brand in lawn care, which adds to its credibility.

However, there are a few drawbacks to consider. Some users may find the need for annual application for Japanese beetle control a bit inconvenient, especially if they’re looking for a one-time solution. Also, while it's effective against many pests, it may not address all types of lawn issues, meaning you might need supplementary products for complete lawn care. Lastly, environmental impact is a consideration; while it's designed to be safe when used as directed, any chemical application requires caution regarding pets and wildlife.

Scotts GrubEx1 is a great option for those looking to maintain a healthy lawn without a lot of fuss. Just ensure you're applying it at the right time and are aware that it may not solve every pest problem you encounter.

The 'ST. Gabriel Organics - Milky Spore Granular Natural Bacteria Japanese Beetle Grub Killer' stands out for its use of Milky Spore, a natural bacteria that targets Japanese beetle grubs. This makes it an eco-friendly option for those looking to control grubs without harming beneficial insects, pets, or children. One of its significant strengths is the long-lasting protection it offers; a single application can provide up to 10 years of grub control, which is highly convenient and cost-effective in the long run.

The product comes in a 20-pound granular form that is easy to spread with a lawn spreader, simplifying the application process for users. Additionally, by eliminating grubs, it supports healthier lawn growth, resulting in thicker and more robust grass. However, it is essential to note that the effectiveness of Milky Spore can vary depending on environmental factors such as soil temperature and moisture. This could affect the timing and consistency of results.

Moreover, while the product is safe for the environment, it is specifically designed to target Japanese beetle grubs, so it may not be effective against other types of grubs or pests. For those looking for a natural, long-term solution to Japanese beetle grubs, this product provides a solid option with minimal environmental impact.