10 Best Organic Grub Killers 2025 in the United States

Natures Good Guys - Triple Blend Beneficial Nematodes HB+SC+SF is a blend designed to tackle a variety of insect pests organically. The product contains three beneficial nematode species (HB, SC, and SF), making it versatile in targeting different insect species. The natural composition ensures it's safe for use around animals, pets, and plants, which is a significant advantage for any eco-conscious gardener or homeowner.

The guarantee of live delivery adds an element of reliability, ensuring users get viable nematodes ready for action upon arrival. With a coverage of 50 million nematodes, the product is suitable for moderately large areas, making it practical for both garden and lawn applications. One potential drawback could be the application method, which might require some knowledge and care to ensure the nematodes are effectively distributed and remain alive during application.

The ease of use is relatively good once the user understands the process. The environmental impact is minimal, promoting a healthier garden ecosystem by targeting pests without harming beneficial insects. This product seems best suited for individuals looking for a natural and effective method to control insect pests without resorting to chemical pesticides.

Scotts Turf Builder SummerGuard Lawn Food with Insect Control is a comprehensive product designed to both fertilize your lawn and control a variety of common pests. One of its primary strengths is its dual functionality, providing both nourishment for the grass and insect control. This can be particularly beneficial in the summer when lawns are stressed by heat and drought, and insect activity is high. The product is effective against a broad range of insects, including ants, armyworms, chinch bugs, crickets, fleas, grasshoppers, spiders, and ticks, which is quite comprehensive for a single product. Additionally, it can be used on any grass type, adding to its versatility.

The coverage area of 5,000 square feet per 13.35 lb. bag is generous, making it suitable for medium to large lawns. The application method is straightforward, as it can be applied to a dry lawn when insect activity or damage is first noticed. The product is in granule form, making it relatively easy to spread evenly across the lawn. However, there are some drawbacks to consider. The environmental impact and safety for beneficial insects are not clearly specified, which could be a concern for eco-conscious users or those trying to maintain a healthy ecosystem in their garden.

In summary, Scotts Turf Builder SummerGuard Lawn Food with Insect Control is a versatile and efficient choice for those looking to both nourish their lawn and control pests during the summer months, but users with specific environmental or eco-friendly concerns may need more information before deciding.

The St. Gabriel Organics Milky Spore Grub Control Mix is an organic grub killer that uses naturally occurring milky spore bacteria to target insect larvae in the soil. This product comes in granules and powder form, making it fairly easy to apply by spreading over affected lawn areas. It's designed to be safe for beneficial insects and other non-target wildlife, making it a good choice for gardeners wanting an environmentally friendly option.

The active ingredient, milky spore, specifically attacks Japanese beetle grubs, which helps reduce lawn damage over time. Milky spore treatments generally work gradually and may take a season or more to build up enough presence in the soil to be fully effective. Because it's a biological control, it has low environmental impact and won't harm pets or humans when used as directed.

This product suits those looking for a natural, long-term grub control solution that avoids harsh chemicals. It is best for people with medium to large lawn areas dealing with Japanese beetle grub infestations who prefer safe, organic gardening methods.