Best Grub Killers for St Augustine Grass to Protect Your Lawn 2025
St Augustine grass is a popular warm-season lawn choice, but it’s vulnerable to grub infestations which can damage its thick turf. Choosing the best grub killer designed or safe for St Augustine grass can protect your lawn’s health. This article reviews top Amazon grub control products effective for St Augustine lawns, focusing on their coverage, insect control spectrum, and application benefits. A quick comparison table below summarizes key features of each recommended product to help you make an informed choice.
| Product Name | Brand | Coverage Area | Control Duration | Additional Pest Control |
|---|---|---|---|---|
| Scotts GrubEx1 Season Long Grub Killer | Scotts | 5,000 sq. ft. | Up to 4 months | Caterpillars, chinchbugs, Japanese beetles |
| BioAdvanced Complete Brand Insect Killer | BioAdvanced | Varies (granules) | Season-long | Ants, ticks, fleas, mole crickets |
| BioAdvanced Season Long Grub Control | BioAdvanced | 5,000 sq. ft. | Season-long | Ants, ticks, chinch bugs, European crane fly larvae |
| Ortho BugClear Lawn Insect Killer1 | Ortho | Up to 16,500 sq. ft. | 6 months (ants) | Ants, spiders, ticks, fleas, armyworms |
| Fertilome St. Augustine Weed & Feed 15-0-4 | ferti-lome | Varies | Not specified (herbicide + fertilizer) | Pre-emergent & post-emergent weed control |
Scotts GrubEx1 Season Long Grub Killer for St Augustine Turf
Scotts GrubEx1 provides comprehensive grub control for St Augustine grass with a single application that protects up to 5,000 square feet for up to 4 months. It targets grubs in their early stages, which helps prevent significant turf damage. This product also controls a range of pests such as caterpillars (armyworms), chinchbugs, and May/June beetles, along with helping to manage Japanese beetle infestations when applied yearly.
The granules are designed for ease of use and effective distribution, making lawn care straightforward. It’s ideal for homeowners seeking long-lasting protection without frequent reapplication.
BioAdvanced Complete Brand Insect Killer Granules for Lawns
The BioAdvanced Complete Brand Insect Killer effectively controls a wide range of destructive insects affecting lawns, including ants, fleas, ticks, chinch bugs, mole crickets, and grubs. The granule formula kills these pests on contact and provides season-long protection when applied correctly as a broadcast, band, or spot treatment.
This product creates a protective barrier and is versatile for different lawn areas. Its extensive insect control spectrum makes it a good choice for St Augustine grass owners dealing with multiple pest challenges.
BioAdvanced Season Long Grub Control Granules for Lawns
BioAdvanced Season Long Grub Control granules offer powerful lawn insect protection targeting over 40 destructive pests, including common grub species and ants. It covers up to 5,000 square feet per application, providing season-long control starting immediately after application.
This product is well-suited for St Augustine grass lawns requiring broad insect and grub prevention. It also tackles mole crickets, chinch bugs, and European crane fly larvae, making it a versatile choice for comprehensive pest defense.
Ortho BugClear Lawn Insect Killer for Large Lawns
Ortho BugClear Lawn Insect Killer targets a wide range of insects, including ants, spiders, ticks, fleas, armyworms, and grub larvae. It provides up to 6 months of control against ants and lasts well over the typical grub control durations, which can be advantageous for large properties up to 16,500 square feet.
This product kills pests by contact and is designed for lawn, ornamental plants, flower beds, and home perimeter protection, offering versatility beyond just grub control while being safe for St Augustine turf.
Fertilome St. Augustine Weed & Feed Fertilizer and Herbicide
Fertilome St. Augustine Weed & Feed offers combined benefits of weed control and lawn nutrition with its 15-0-4 fertilizer blend plus pre-emergent and post-emergent herbicide action. Designed specifically for St Augustine, Zoysia, and Centipede grasses, it helps discourage weed growth while feeding your lawn.
Although this product does not directly target grubs, it plays a valuable role in maintaining the overall health of St Augustine lawns by keeping weeds under control and supporting turf vigor, which can improve resistance to pest damage.
Buying Guide: Choosing the Best Grub Killer for St Augustine Grass
Effectiveness Against Grubs and Other Pests
Look for products that specifically target grubs during their early lifecycle to prevent turf damage. Many effective grub killers also control other common lawn pests such as chinch bugs, armyworms, and Japanese beetles, offering broader lawn protection.
Duration of Protection
Season-long protection products reduce application frequency and ensure continuous grub control. Typical protection ranges from 3 to 6 months. Consider your local pest pressure and lawn size to determine how long-lasting your treatment needs to be.
Safe Use on St Augustine Grass
Ensure the product is labeled safe for St Augustine grass. Some herbicides and insecticides target northern grasses and may harm warm-season turf. Using a product suited for St Augustine maintains lawn health while killing pests.
Application Method and Coverage
Granules and ready-to-spray formulations are popular. Granules offer measured application over large areas, while ready-to-spray formulas can provide targeted treatment. Select a product suitable for your lawn size and ease of use preferences.
Additional Lawn Care Benefits
Some products combine grub control with fertilization or weed control, enhancing overall lawn maintenance. If you want a multi-functional approach, consider weed & feed or combined fertilizer options designed for St Augustine grass.
Environmental and Safety Considerations
Check product instructions regarding pet safety, water run-off, and environmental impact. Use protective gear during application and follow recommended re-entry intervals to ensure safety for family and pets.