10 Best Chemical Crabgrass Killers 2025 in the United States

The Scotts Turf Builder Halts Crabgrass Preventer with Lawn Food is designed to serve a dual purpose: preventing crabgrass and other listed weeds while fertilizing your lawn for a fast green-up after winter. It is most effective when applied early in the spring to a dry lawn before the temperature regularly hits the 80s. One of its standout features is its extensive coverage, capable of treating up to 15,000 sq. ft., making it suitable for larger lawns.

However, it's important to note that it should not be used on Dichondra and Bentgrass lawns as it may harm these types of grass. The product's formulation ensures that adverse weather conditions like rain or snow won't impact its effectiveness, which adds to its ease of use. While it is efficient in preventing a wide range of weeds, users should be aware of the environmental impact of using chemical treatments on lawns.

This product offers convenience and reliability for those looking to both nourish their lawn and keep crabgrass at bay, provided it is applied at the correct time and on compatible lawn types.

The Scotts Turf Builder Triple Action1 offers a comprehensive solution for anyone seeking to maintain a healthy, weed-free lawn. This product stands out with its three-in-one formula that not only kills common weeds like dandelions and clover but also prevents crabgrass for up to 4 months while simultaneously fertilizing the lawn. This combination can be very efficient for maintaining a lush, green yard without the need for multiple separate treatments.

The product is designed for use on a variety of common lawn grasses, including Bahiagrass, Centipedegrass, and Kentucky Bluegrass, making it quite versatile. It comes in granular form, which is easy to apply using a Scotts spreader, and requires watering in after 24 hours for best results. Timing the application in spring when dandelions are actively growing is crucial for effectiveness. However, it's important to note that this product won't kill existing crabgrass, which may require additional treatments if already present.

Additionally, it's not available for purchase in several regions, including AK, HI, PR, GU, and VI. Environmentally, the impact of such chemical treatments should be considered, especially regarding potential effects on non-target plants and soil health. Users should also consider the ease of use and follow the application instructions carefully to avoid potential misapplication. The Scotts Turf Builder Triple Action1 is a strong contender for those who want a multipurpose product that handles weeds, crabgrass prevention, and lawn feeding in one package.

The Scotts Halts Crabgrass & Grassy Weed Preventer is a pre-emergent weed killer designed to prevent the germination of various lawn weeds including crabgrass, foxtail, spurge, and more. It is applied in the early spring or fall to a dry lawn and remains effective despite rain, snow, or freezing weather post-application.

The granule formulation is easy to spread and covers a substantial area of up to 10,000 sq. ft. per 20.12 lb. bag, making it suitable for larger lawns. It's compatible with all grass types except Dichondra or Bentgrass, adding versatility for different lawn care needs.

It simplifies lawn care by preventing weed germination, though it requires precise timing for optimal results, which can be a bit tricky for some users. Its broad coverage and season-long weed prevention make it a strong candidate for those looking to maintain a weed-free lawn with minimal effort.