10 Best Crabgrass Killers 2025 in the United States

Scotts Turf Builder Triple Action1 is a versatile product that serves as a weed killer, crabgrass preventer, and lawn fertilizer, making it suitable for homeowners looking to maintain a healthy lawn. One of its key strengths is its three-in-one formula, which not only targets various common weeds like dandelions and clover but also provides essential nutrients to encourage thick, green grass. It effectively prevents crabgrass for up to four months, allowing you to enjoy a weed-free lawn during the growing season.

This product is compatible with several types of grass, including Kentucky Bluegrass and Bermudagrass, making it a flexible option for diverse lawns. The application method is straightforward: you apply it to a wet lawn using a Scotts spreader and water it in, which is user-friendly for homeowners.

However, there are some drawbacks to consider. One limitation is that it does not kill existing crabgrass, so it’s most effective as a preventive measure rather than a solution for an already infested lawn. Additionally, it can only be used in specific states, excluding places like Alaska and Hawaii, which could limit its availability for some users. The product also requires careful timing, as it's best applied in spring when weeds are actively growing, which may require some planning. In terms of environmental impact, while Scotts products are generally formulated to be effective, some users may prefer organic options. Lastly, the granule form means you’ll need a spreader for even application, which might not be readily available for everyone. This product is ideal for homeowners looking for an efficient way to manage weeds while nurturing their lawns, but those with existing crabgrass problems may need to seek additional solutions.

Scotts Halts Crabgrass & Grassy Weed Preventer is a pre-emergent weed killer designed to prevent crabgrass and other grassy weeds from germinating in your lawn. One of the standout features is its broad spectrum of effectiveness, targeting various weeds such as foxtail, spurge, and barnyardgrass, which makes it a reliable choice for homeowners looking to maintain a healthy lawn. It is suitable for all grass types, adding to its versatility, although it should not be used on Dichondra or Bentgrass. With a coverage of up to 10,000 square feet, this 20.12 lb bag offers good value for larger lawns.

A notable strength is its ease of application; you can apply it in early spring or fall, and it remains effective even after rain or frost, which can be a significant advantage for those who may not have ideal weather conditions.

On the flip side, while the product is effective, it is essential to apply it at the right time for maximum benefits, which may require some attention to local weather conditions and timing. Additionally, being a pre-emergent killer means it won't address existing weeds, so if you have crabgrass already growing, you'll need a different solution for that. The environmental impact is another consideration; some users prefer organic options, and while this product is effective, it does use chemical ingredients. Thus, it may not align with all users' preferences for eco-friendly lawn care.

The Roundup Dual Action Weed & Grass Killer Plus 4 Month Preventer with Sure Shot Wand is a versatile product designed to both eliminate existing weeds and prevent new ones for up to four months. This dual action is effective for areas like driveways, sidewalks, patios, and around well-established plants. The Sure Shot Wand provides precision in application, making it user-friendly and reducing the risk of harming nearby plants.

It works quickly, showing visible results in as fast as six hours and is rainproof within 30 minutes, adding to its convenience. However, its compatibility with lawns might be limited as it is primarily intended for hardscapes and landscaped areas. Additionally, it's important to consider the environmental impact, as herbicides can affect the surrounding ecosystem.

Users looking for a fast-acting and long-lasting weed solution will find this product valuable, but they should use it cautiously around desired plants and in alignment with local environmental guidelines.