10 Best Post Emergent Crabgrass Killers 2025 in the United States

The Ortho WeedClear Lawn Weed Killer Concentrate is designed to target and eliminate common lawn weeds like dandelion, chickweed, clover, crabgrass, and foxtail. One of its main strengths is its fast-acting formula, which promises visible results with just one application. Additionally, it is effective in killing weeds down to the roots while being safe for the lawn when used according to the directions.

This makes it a reliable choice for homeowners with a variety of grass types, including Bermudagrass, Buffalograss, Fescues, Kentucky Bluegrass, Ryegrass, and Zoysiagrass. Another advantage is its coverage capacity, as a 32 fl. oz. bottle can treat up to 5,000 square feet of lawn area. However, it is essential to note that this product is a concentrate and cannot be applied directly from the container; careful attention must be paid to the instructions for proper mixing and application.

As with any herbicide, there are environmental and safety concerns to consider, particularly ensuring that it doesn’t affect non-target plants or wildlife. For those looking for a powerful, fast-acting weed killer that targets a broad spectrum of weeds without damaging the grass, this Ortho product could be a solid option, but users should be prepared for the extra step of mixing and careful application.

BASF Drive XLR8 Crabgrass Killer uses quinclorac as its active ingredient, effectively controlling both grassy and broadleaf weeds such as crabgrass, dandelions, and clover. This makes it a versatile choice for various weed problems in lawns and turf. Its water-based liquid formulation helps the herbicide absorb quickly, enabling faster results compared to some other products. Additionally, it offers 30-day residual control, meaning it continues working for about a month and reduces the frequency of applications needed. The product also becomes rainfast within an hour, so light rain won’t wash it away soon after application.

It can be used on different types of turf, including warm-season and cool-season grasses, making it suitable for homeowners, golf courses, and commercial properties. Users should exercise caution and wear protective clothing like gloves and long sleeves during application, following label instructions closely to avoid environmental damage. In some states, such as New York, it is restricted to spot treatment rather than full lawn spraying.

Because it is a strong and effective herbicide with specific application rules, it is better suited for those comfortable following detailed guidelines. Its concentrated form requires mixing before use, which might be challenging for first-time users but allows customization of the amount applied. For those seeking a reliable product to control crabgrass and other common weeds with lasting effects and who are willing to follow safety precautions, BASF Drive XLR8 is a solid option.

Celsius WG is a post-emergent weed control solution that comes in an easy mix packet, eliminating the need for measuring. This feature makes it convenient for users, especially those who are not familiar with handling precise measurements. Its professional golf course quality ensures it is highly effective, capable of killing a variety of weeds including dandelions.

The product acts quickly, which is beneficial for users needing fast results. It contains a combination of active ingredients: Dicamba 57.4%, Iodosulfuron-methyl-sodium 1.9%, and Thiencarbazone-methyl 8.7%, formulated as granules. The product is quite lightweight at 0.23 ounces, making it easy to handle and store. It is safe to use on St. Augustine grass and several other types, which adds to its versatility in different lawn environments.

The inclusion of powerful chemicals like Dicamba could raise environmental and safety concerns, especially if not used correctly. It is crucial to follow the application timing strictly to avoid damaging desirable plants. The product might be more suitable for users with some experience in handling weed control chemicals, given the need for careful application to ensure safety and environmental protection. Users looking for a simple and fast-acting solution with professional quality might find this product very useful, provided they adhere to safety guidelines.