10 Best Weed And Crabgrass Killers 2025 in the United States

Roundup Weed & Grass Killer₄ Concentrate is a versatile and effective product designed to tackle tough weeds and grasses, including dandelions, crabgrass, and poison ivy. Its active ingredients are powerful enough to kill these weeds down to the root, making it a reliable choice for those looking to maintain a pristine lawn or garden. The product can be used in various areas of your yard, from flower beds to walkways, and even large areas like lawns and garden plots.

One of its notable strengths is its rainfastness, becoming rainproof in just 30 minutes and showing visible results within hours. This means you don't have to worry about unexpected rain washing away your efforts soon after application. Additionally, the ability to plant 1 to 30 days after application offers flexibility in garden planning. Mixing and applying the concentrate is straightforward, requiring a tank or hose-end sprayer to cover about 300 sq. ft. per gallon of solution. However, the need to mix the product according to label directions might be a slight inconvenience for some.

On the environmental side, while effective, users should be cautious about its potential impact on non-target plants and wildlife. Safety precautions are necessary to avoid harmful effects. Despite its effectiveness, the concentrate form means it requires proper storage and handling, and at 24.9 pounds, it is relatively heavy. If you need a strong, rainproof solution for a variety of tough weeds and don't mind taking extra care with its application, Roundup Weed & Grass Killer₄ Concentrate is a solid option.

Scotts Liquid Turf Builder with Plus 2 Weed Control is a liquid weed killer and fertilizer that helps control various listed broadleaf weeds such as dandelion, clover, and chickweed while providing a nitrogen boost to your lawn. This product is designed for use on a variety of grasses including Bluegrass, Fescue, and Bermudagrass, making it versatile for different lawn types.

The ready-to-spray format makes it convenient to apply when weeds are actively growing, covering up to 6,000 sq. ft. for warm season lawns and 4,000 sq. ft. for cool season lawns with the 32 fl. oz. container. This dual-action product saves time by combining weed control and fertilization in one application. However, it's important to note that it is a post-emergent treatment, meaning it works on weeds that are already present rather than preventing new ones from sprouting.

This product primarily contains nitrogen, which is beneficial for lawn health but may not be suitable for users looking for a broader spectrum of active ingredients. Additionally, users should be mindful of its environmental impact and safety, ensuring it is applied correctly and safely stored. This product is ideal for users looking for a combined weed control and fertilization solution for their lawns, particularly if they prefer a liquid, ready-to-spray format.

The Roundup Weed and Grass Killer4 with Trigger Sprayer is designed to target and eliminate a variety of tough weeds and grasses, including dandelion, crabgrass, poison ivy, clover, and other broadleaf weeds. This product is a post-emergent herbicide, meaning it works on weeds that have already sprouted. Its rainfastness is a major strength, as it becomes rainproof within 30 minutes of application and shows visible results within hours, making it a quick and efficient solution for weed control.

The trigger sprayer application method adds convenience, allowing for precise and easy application on targeted areas such as flower beds, around trees, driveways, patios, walkways, and other specified areas. It has a user-friendly design and covers up to 300 square feet per gallon, making it suitable for both small and larger areas. A notable advantage is the ability to plant new vegetation 1 to 30 days after application, providing flexibility for gardening plans.

However, users should be aware of the safety and environmental impact, as chemical herbicides can pose risks to non-target plants, pets, and wildlife if not used carefully. It is important to follow the usage instructions meticulously to minimize any negative effects. With a high customer rating of 4.5 out of 5 stars and a ranking as the #2 best-selling weed killer, it is clearly a popular and effective choice. The product's 1-gallon volume and easy-to-handle trigger sprayer make it a practical option for homeowners looking to maintain a weed-free environment around their homes. While effective, always consider the potential environmental impact and take precautions to use it safely.