10 Best Weed Killers For Lawns 2025 in the United States

Roundup Dual Action 365 is a weed killer designed to both remove existing weeds and prevent new ones for up to 12 months. It targets a wide range of weeds including common lawn nuisances like clover, dandelions, crabgrass, poison ivy, and other broadleaf and grassy weeds. This product is best suited for non-lawn areas such as cracks in sidewalks, driveways, patios, and gravel patches since it prevents weed growth for a full year, which is helpful in places where you want a clean, weed-free surface.

The application is user-friendly thanks to the Comfort Wand with a one-touch continuous spray, making it less tiring to use over larger areas. It also becomes rainproof in about 30 minutes and shows results within hours, which means you don’t have to worry much about weather shortly after application. Because it’s a strong weed killer with multiple active ingredients, care should be taken to avoid applying it on lawns or desirable plants, as it’s not selective and will kill grass where you don’t want it removed.

The product is a liquid spray, covering around 300 square feet per gallon, which is reasonable for medium-sized areas. Its environmental impact and safety depend on proper use and following instructions carefully, as it contains chemicals that require caution around pets, children, and water sources. For anyone needing a long-term weed solution on hard surfaces or non-lawn areas, this product provides a convenient and effective choice, especially if you want fewer repeat treatments throughout the year.

The Roundup Dual Action 365 Weed & Grass Killer Plus 12 Month Preventer is a powerful solution for those seeking long-term weed control. It boasts a dual-action formula that not only kills a wide variety of tough weeds and grasses but also prevents new growth for up to 12 months. This product is particularly effective against common nuisances such as clover, dandelion, crabgrass, and poison ivy, making it versatile for different weed types.

The included Pump 'N Go 2 Sprayer is user-friendly, offering up to 10 minutes of continuous spray with an extendable wand for greater accuracy and ease of use, especially in hard-to-reach areas like cracks and crevices in driveways or sidewalks. Visible results can be seen within hours, and it's rainproof in just 30 minutes, adding to its convenience for users who need quick and lasting effects.

This product is best suited for non-lawn areas, as its strong formula can also damage desirable grass and plants. It offers coverage of up to 400 square feet per 1.33-gallon container, which is substantial but may require multiple applications for larger areas. Safety and environmental impact are considerations; while effective, users should handle with care, following all safety instructions to avoid harm to pets, children, and the surrounding environment.

Scotts Liquid Turf Builder with Plus 2 Weed Control is a liquid weed killer and fertilizer that combines weed control with lawn nourishment. It is designed to kill various broadleaf weeds, including dandelions, clover, and poison ivy, while providing a nitrogen boost to the lawn. This product is easy to apply with a ready-to-spray formula, targeting active weeds effectively.

It is suitable for several types of grass, such as Bluegrass, Fescue, and Bermudagrass, making it versatile for different lawn types. A 32 fl. oz. container covers up to 6,000 sq. ft. for warm season lawns and 4,000 sq. ft. for cool season lawns, which is fairly efficient coverage. However, users should be mindful of the timing of application, as it is most effective when weeds are actively growing.

Additionally, while the product combines weed control and fertilization, it may not be suitable for those looking for an organic or eco-friendly option, as it contains chemical ingredients. Its dual functionality as both a weed killer and fertilizer can be a strong selling point for those looking to save time and effort in lawn maintenance, but it may require careful handling to avoid potential environmental impact or safety concerns.