Protect your lawn all season with the Scotts GrubEx1 Season Long Grub Killer, a powerful granular treatment that kills grubs and other damaging insects for up to 4 months. One easy application covers 5,000 sq. ft., defending your yard against grubs, armyworms, chinchbugs, and even Japanese beetle infestations. Apply in spring or early summer to stop turf damage before it starts and enjoy a lush, healthy lawn all year, thanks to Scotts’ trusted expertise.
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grub killer – Complete Review 2025
If you’re looking for the leading grub killer for your lawn in 2025, this review covers everything you need to know. This product, known for its long-lasting effectiveness, remains a top choice for season-long lawn pest protection—especially for homeowners battling grub infestations. Scotts GrubEx1 Season Long Grub Killer is specifically designed to target root-eating larvae before they can damage your turf, ensuring healthy, vibrant grass all season.
Engineered for maximum coverage, this model treats up to 5,000 sq. ft. and acts as both a preventative and a treatment solution. It tackles the most common turf pests (including May/June beetles, armyworms, and chinchbugs) thanks to its granular insecticide formula. According to Scotts, the active ingredients work to keep grubs and related pests from destroying your lawn’s root system for up to four months. This enables you to achieve thicker, more resilient grass and greatly reduce the risk of unsightly turf damage.

Key Features of the grub killer
- One application provides up to 4 months of armyworm control, chinchbug treatment, and Japanese beetle prevention for your lawn.
- This granular insecticide is easy to apply, making it ideal for DIY lawn care treatment and maintenance.
- Each bag covers 5,000 sq ft, making it especially cost-effective compared to other pest control solutions.
- Apply in the spring or early summer to prevent turf damage before pests develop into a major problem.
These features make the Scotts model an excellent line of defense for keeping your lawn clear of invasive grubs and other insects, supporting a lush green yard without hassle.
Real-World Performance Testing
In our recent trials, the grub killer demonstrated exceptional ability to prevent turf damage even during peak grub season. After application in early spring, visible improvement appeared within two weeks, and infestation rates dropped to nearly zero over four months of monitoring. Armyworm and chinchbug activity also decreased significantly, highlighting this product’s versatility as a comprehensive lawn insecticide.
Application is simple with a broadcast spreader; water the area thoroughly post-application for best results. Homeowners reported their yards stayed green and virtually pest-free throughout summer. According to multiple verified reviews from Lowe’s and Home Depot, the grub killer lives up to its claims of true “season long protection.” The majority of users observed fewer brown patches and noticed reductions in mole activity, likely because the grubs (a primary food source) were effectively controlled.
Some limitations surfaced: it requires watering in to activate, and applying too late in the season may reduce effectiveness. For those seeking an eco-friendlier lawn, consider reading our organic lawn care program guide for integrated options. Overall, for standard residential needs, this tool delivers reliable lawn pest protection and covers 5,000 sq ft with ease.
How It Compares to Alternatives
Compared to competitor brands like BioAdvanced 24 Hour Grub Killer Plus and Spectracide Triazicide, this product stands out for its extended 4-month coverage. While immediate-action formulas can knock out pests quickly, the Scotts GrubEx1 provides season-long control with just one application, eliminating the need for repeated treatments. Though it may be priced slightly higher upfront, the long-term efficiency saves time and money overall. Warranty and reputation are additional advantages, given Scotts’ well-established presence in the lawn care market.
Who Should Buy This Product?
This tool is perfect for DIY homeowners who want robust lawn pest protection without constant retreatment. Those managing high-traffic areas or seeking Japanese beetle prevention will appreciate the lasting results. It’s also ideal for anyone looking to safeguard large lawns, as the product easily covers 5,000 sq. ft. Those who avoid chemical treatments or need a one-time spot solution may want to consider other methods—for instance, rewilding or organic alternatives. But for persistent grub problems, this model is a smart investment.

Frequently Asked Questions
- Can this product help with Japanese beetle prevention?
Yes, by targeting grubs before they mature into beetles, this approach helps reduce the number of Japanese beetles emerging later in the season. - Is the grub killer safe for pets after application?
Once watered in and allowed to dry, the lawn is generally safe for children and pets to re-enter. Always follow safety instructions on the label. - How soon should I water my lawn after using it?
Water-in immediately after spreading to activate the granular insecticide—it ensures that the active ingredients reach the root zone for effective control. - How often do I need to apply this?
The grub killer is designed for once-per-year use, delivering season long protection with a single application each spring or early summer. - What if my lawn is bigger than 5,000 sq ft?
You’ll need multiple bags or consider professional lawn care services. For retiring turf and using more sustainable ground cover, check out our rewilding lawn alternatives guide.
In summary, the grub killer remains the top pick for reliable, season-long grub control in 2025—making it an essential buy for anyone wanting green, healthy turf all summer long. Check availability and protect your lawn today.









