10 Best Liquid Crabgrass Killers 2025 in the United States

The Scotts Liquid Turf Builder with Plus 2 Weed Control is a versatile lawn care product that combines weed control and fertilization in one convenient 32 fl. oz. package (pack of 2). This product's primary strength lies in its dual functionality; it not only boosts lawn health with a quick nitrogen boost but also targets a wide range of broadleaf weeds like dandelions, clover, and poison ivy. With coverage of up to 6,000 sq. ft. for warm season lawns and 4,000 sq. ft. for cool season lawns, it offers substantial reach for medium to large lawns.

It's designed for use on various grass types including Bluegrass, Fescue, and Bermudagrass, making it a flexible choice for many homeowners. The ready-to-spray design simplifies application, requiring only a garden hose for setup, which is a plus for ease of use. Some potential drawbacks include its reliance solely on nitrogen as the active ingredient, which may not provide comprehensive fertilization needs for all lawns. Additionally, users should be cautious about the product's safety around pets and children, ensuring they are kept off the treated areas until it is fully dry.

While it offers good rainfastness, meaning it can resist being washed away by rain shortly after application, it is most effective when applied during active weed growth. Potential buyers should consider the specifics of their lawn's needs and the presence of children or pets before purchase.

The Ortho GroundClear Weed and Grass Killer2 Concentrate is an effective solution for eliminating a variety of weeds and grasses, including dandelions, chickweed, and crabgrass. One of its main strengths is the fast-acting formula, which starts working in just 15 minutes and becomes rainproof within 2 hours. This ensures that users can see quick results and have confidence in its durability against weather conditions.

The product covers an area up to 600 square feet, making it suitable for patios, driveways, and landscape beds. However, it is important to note that this weed killer is not intended for use on lawns or desirable grasses, so careful application is necessary to avoid unwanted damage. The active ingredient, Ammonium Nonanoate, is listed by OMRI, indicating it meets organic standards for certain uses, which can be a plus for environmentally conscious consumers.

Additionally, users should follow the dilution instructions for optimal performance. For those looking to tackle stubborn weeds in specific areas while seeking quick, visible results, the Ortho GroundClear Weed and Grass Killer2 Concentrate could be a valuable tool, provided they handle it with proper care and attention to safety.

The Ortho WeedClear Lawn Weed Killer Concentrate is an effective solution for tackling stubborn weeds like crabgrass, dandelion, clover, and chickweed. The product is designed for ease of use, with an included Dial N Spray Hose-End Sprayer that simplifies the application process. You simply attach the bottle to the sprayer, connect it to your garden hose, set the dial according to the label's instructions, and start spraying. This makes it accessible even for those who are not very experienced with lawn care products.

The product covers a substantial area of up to 5,000 sq. ft., making it suitable for medium to large lawns. Users will appreciate that it is rainproof within an hour, so there's no need to worry about sudden showers diluting its effectiveness. Moreover, the weed killer claims to show visible results after just one application, which is a significant advantage for those seeking quick outcomes.

While Ortho WeedClear is labeled as safe for lawns when used as directed, users should always follow the instructions carefully to avoid potential harm to their grass. The product's safety for pets and children is not explicitly stated, so caution is advised to keep them away from treated areas until the product has dried completely. Additionally, the long-term residual control of this product is not detailed, so regular reapplication might be necessary to maintain a weed-free lawn.