10 Best Weed Killers For Lawns 2025 in the United States

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.

The Scotts Turf Builder Triple ActionI is a versatile product designed for lawn care enthusiasts who seek a three-in-one solution for weed control, crabgrass prevention, and lawn fertilization. This product efficiently targets a variety of common lawn weeds, including dandelions, clover, and chickweed, while also preventing crabgrass for up to four months. Its granular form makes it easy to apply with a spreader, and it covers up to 4,000 square feet, making it suitable for medium-sized lawns.

Application timing is crucial, as it should be applied in early spring to a wet lawn and watered in after 24 hours for optimal results. One key advantage is that it not only controls weeds but also feeds the grass, promoting a thick, green lawn. However, it should be noted that it does not kill existing crabgrass and is formulated for specific types of grasses such as Bahiagrass, Centipedegrass, Kentucky Bluegrass, and others.

The active ingredients, Pendimethalin and Dicamba, are effective but users should handle with care and follow safety instructions to avoid any environmental impact. The persistence and residual effects are beneficial for extended weed control but may require caution to avoid affecting non-target plants. This product is ideal for those looking for a comprehensive lawn treatment that combines weed control with fertilization.

Scotts Halts Crabgrass & Grassy Weed Preventer is designed for homeowners who want to tackle a range of common lawn weeds such as crabgrass, foxtail, and chickweed. As a pre-emergent weed killer, it effectively prevents the germination of listed weeds when applied in early spring or fall. The granular form is easy to spread, covering up to 10,000 sq. ft., making it suitable for larger lawns. One key advantage is its resilience to weather conditions post-application, meaning rain or snow won’t diminish its effectiveness.

This product works well with all grass types except Dichondra and Bentgrass, providing broad utility. However, it does not treat existing weeds, so it’s crucial to use it before weeds appear. Additionally, it’s important to consider that pre-emergent weed killers can have residual effects on the soil, possibly impacting future planting.

While it is effective in preventing weed growth, the environmental impact of chemical weed killers should be carefully considered by those mindful of ecological effects. The product’s weight of 20.12 pounds might also be cumbersome to handle for some users. This weed preventer is well-suited for those looking to manage a wide variety of lawn weeds as part of their seasonal lawn maintenance.