10 Best Crabgrass Killers 2025 in the United States

The Ortho GroundClear Weed and Grass Killer is a versatile product designed to tackle various types of weeds and grasses, including dandelions, chickweed, moss, and crabgrass. One of its key strengths is its fast-acting formula, which shows visible results in just 15 minutes and becomes rainproof within 2 hours. This makes it a convenient choice for quick weed control in areas like patios, walkways, and driveways, as well as landscape beds. However, it's important to note that this product is not suitable for use on lawns or desirable grasses, which could limit its application if you need to protect your lawn while killing weeds.

Ease of use is another positive aspect, particularly if you have the Comfort Wand from the original container, allowing for precise targeting of weeds. The 1-gallon refill is substantial, covering a significant area and making it economical for extended use. However, always ensure that weeds are small, actively growing, and not wet to achieve the best results.

In terms of environmental impact, the product is OMRI (Organic Materials Review Institute) listed, suggesting it meets organic standards, which can be a reassuring factor if you're concerned about using chemicals in your garden. A drawback to consider is that the product's effectiveness hinges on proper application conditions, such as dry weather and active weed growth, which may require you to plan your usage accordingly. Additionally, the product's restriction to non-lawn areas means it might not be the best choice for those looking to address crabgrass specifically in their lawns. If you need a powerful and fast-acting solution for controlling weeds and grasses in specific areas around your home and are mindful of application guidelines, this product could be a strong contender.

The Spectracide Weed and Grass Killer Concentrate is designed for use on patios, walkways, and driveways, rather than lawns. This makes it ideal for users looking to clear weeds and grasses from hardscaped areas. Its fast-acting formula shows visible results within 3 hours, and its rainfast feature ensures effectiveness even after rainfall or watering 15 minutes post-application.

The concentrate form requires mixing and application with a tank sprayer, which may require additional effort and equipment, but allows for thorough coverage of target vegetation. This product is non-selective and broad spectrum, meaning it will kill a variety of weeds and grasses, not just crabgrass. However, it may not be suitable for use on lawns due to its non-selective nature, which could harm desirable grass and plants.

The ease of use is moderate given the need for a sprayer, but the visible results and effectiveness make it a strong option for those who need quick and reliable weed control on non-lawn surfaces. In terms of environmental impact, it is important to consider potential runoff and its effects on nearby plants and water sources.

The Roundup Weed & Grass Killer₄ Refill is a versatile herbicide designed to tackle tough weeds and grasses like crabgrass, dandelion, and poison ivy to the root. Its active ingredients include Triclopyr, Triethylamine Salt, Fluazifop P-Butyl, and Diquat Dibromide, which are effective against a wide range of broadleaf weeds and grasses. This product is easy to apply, coming in a spray form that is rainproof within 30 minutes and shows visible results in just a few hours.

It covers an area of 375 square feet per 1.25 gallons, making it suitable for use in and around flower beds, trees, driveways, walkways, and more. You can even start planting 1 to 30 days after application, depending on the specifics, which adds to its convenience. However, it's important to consider that this product is not exclusively tailored to lawn care but more for general weed killing around various areas.

Lawn compatibility might be a concern, as using it on a lawn could harm the grass you want to keep. Additionally, while it is effective, users should handle it with care due to its potent chemicals, considering the environmental impact and safety precautions. The Roundup Weed & Grass Killer₄ Refill is a practical and effective choice for those looking to manage weeds in a variety of settings beyond just their lawn.