10 Best Ortho Weed Killer 2026 in the United States

The Ortho GroundClear Year Long Vegetation Killer refill is a strong option for those looking to eliminate all weeds and grasses in tough areas like driveways, sidewalks, and gravel patches. It is a non-selective weed killer, meaning it kills any plant it touches, so it’s best for spot treating unwanted vegetation in places where you don’t want any plants to grow. The fast-acting formula starts working right away and kills weeds down to the root, helping prevent regrowth for up to a full year, which is impressive for long-term weed control.

Application is done by spraying with a Comfort Wand (sold separately), which helps target the weeds accurately, reducing waste and accidental damage to nearby plants. It’s recommended to apply on sunny days when temperatures are above 60°F for best results. However, the product isn’t selective, so it’s not suitable for use near grass or flower beds where you want to keep other plants alive.

Since this product is a strong, broad-spectrum weed killer with long residual activity, it requires caution around pets and children. You should keep them away from treated areas until the product has dried and absorbed fully. It is mainly designed for non-lawn areas, so it won’t be ideal for those wanting to selectively remove weeds from their grass. The 1-gallon refill size is convenient for frequent users. If you need a powerful, long-lasting solution for killing weeds where you don’t want any growth at all, this product fits well, but be mindful of its non-selective nature and safety precautions.

The Ortho GroundClear Year Long Vegetation Killer2 Concentrate is a powerful weed and grass killer designed for areas where you want to stop all plant growth for up to a year. It works fast, becoming rainproof within an hour, which is handy if the weather is unpredictable. This product is non-selective, meaning it kills most plants it touches, so it's great for driveways, sidewalks, and other hard surfaces but not for lawns or flower beds.

You mix 24 ounces with a gallon of water and can cover about 3,200 square feet with the 2-gallon container, making it cost-effective for larger spaces. One of its main strengths is its long-lasting effect, preventing weeds from growing back for many months. Because it kills everything it contacts, you need to be careful during application to avoid harming desirable plants nearby.

If you need a strong, lasting weed solution for hardscape areas and are mindful during use, this concentrate is a solid choice. However, if you want to protect grass or specific plants, or require a pet-friendly option, you might want to consider other products.

The Ortho GroundClear Year Long Vegetation Killer is designed to kill a wide range of weeds and grasses effectively, including tough roots, with visible results starting in just one hour. This product is non-selective, meaning it will kill most plants it contacts, so it's best suited for areas like driveways, sidewalks, gravel, and other non-lawn spots where you want no vegetation. It comes with a Comfort Spray Wand that helps apply the liquid precisely, which is handy for targeting problem areas.

One strong point is its long-lasting effect, with weed and grass control lasting up to a full year after a single application—great if you want to minimize repeated treatments. For best results, it should be applied on sunny days when temperatures are above 60°F, and the formula acts quickly once sprayed. Because it is non-selective, it can harm desirable plants nearby, so careful application is necessary. The product does not specify exact rainfastness time, so applying it before rain could reduce effectiveness.

The active ingredients indicate this is a potent chemical, so extra caution is advised around pets and children; it is not the safest option for use in areas where they frequently play. If you need a reliable solution for persistent weed problems in tough spots and do not mind the precautions, this product offers strong performance and convenience with its long residual activity and easy spray application.