10 Best Liquid Weed Killers 2025 in the United States

Roundup Weed & Grass Killer₄ with Pump 'N Go 2 Sprayer is a systemic liquid weed killer designed to tackle tough weeds and grasses down to their roots. This makes it effective against various common weeds such as dandelion, crabgrass, poison ivy, clover, and spotted spurge. The active ingredients include Triclopyr, Triethylamine Salt, Fluazifop-P-Butyl, and Diquat Dibromide, which are potent chemicals for weed control.

The product comes with a convenient Pump ‘N Go 2 Sprayer that features an extendable wand, allowing for up to 10 minutes of continuous spray and greater accuracy without the need to bend over. This application method is user-friendly and efficient, making the process less labor-intensive. It's rainproof within 30 minutes of application, ensuring that it remains effective even if it rains shortly after application. Additionally, the ability to plant between 1 to 30 days after application provides flexibility for gardeners and landscapers.

The product is suitable for use around flower beds, trees, shrubs, patios, walkways, driveways, gravel, mulch beds, fences, foundations, and retaining walls. It's essential to follow safety guidelines as the active ingredients can be harsh on non-target plants and the surrounding environment. Users should wear protective gear and be cautious to prevent runoff into water sources. The product is powerful and effective in killing weeds, but its chemical composition might raise concerns for those looking for more environmentally friendly options.

Ortho GroundClear Year Long Vegetation Killer1 Concentrate is a systemic weed killer designed to eliminate weeds and grasses down to the root and prevent regrowth for up to one year. This makes it particularly effective for long-term vegetation control in areas like driveways, sidewalks, and gravel spaces. The active ingredient, Imazapyr, ensures thorough elimination of unwanted plants, but it requires careful application as it can also affect desirable vegetation.

The concentrate formula is easy to use with a tank hose sprayer, and one gallon of concentrate can treat up to 1,600 square feet, making it cost-efficient for larger areas. However, users should be aware of the environmental impact and potential safety concerns, as systemic weed killers can have prolonged effects on the soil and nearby plants.