Dealing with crabgrass and other common lawn weeds can be frustrating, but choosing the right weed killer makes a big difference. This guide reviews five top options, highlighting how each product targets crabgrass while protecting your healthy turf. Read on to compare effectiveness, application style, and suitability for different grass types so you can decide what to buy for your yard.
Summary of chosen products:
- Ortho WeedClear Lawn Weed Killer Ready-To-Spray (32 oz) — kills crabgrass and broadleaf weeds with a fast-acting formula
- Roundup for Lawns Crabgrass Destroyer2 (64 oz) — strong root-killing action for stubborn grasses
- Spectracide Weed Stop For Lawns Plus Crabgrass Killer (1 gallon) — broad weed coverage including 470+ types
- Spectracide Weed Stop For Lawns Plus Crabgrass Killer Concentrate (32 oz) — concentrated, broad-spectrum weed control
- Scotts Turf Builder Triple Action1 — combines weed control, crabgrass prevention, and lawn feeding
Ortho WeedClear Lawn Weed Killer Ready-To-Spray

The Ortho WeedClear Ready-To-Spray targets common lawn weeds, including crabgrass, dandelion, clover, and foxtail. It acts quickly to kill listed weeds down to the root and is designed for broadcast treatment on a variety of lawn grasses, such as Bermudagrass, Fescues, and Kentucky bluegrass. The product is formulated to be used as directed without harming most common lawn grasses, provided you follow the label instructions. A single application often yields noticeable control, making it a practical option for homeowners seeking fast results.
Roundup for Lawns Crabgrass Destroyer2

Roundup for Lawns Crabgrass Destroyer2 is a ready-to-use option designed to kill crabgrass and other grassy weeds down to the root. The formula targets tough crabgrass and is suitable for application on Kentucky bluegrass, fine fescue, perennial ryegrass, and tall fescue. This product emphasizes rapid action and is built to handle stubborn lawn weeds without extensive mixing. It suits lawn owners who prefer a simple, straightforward spray application with reliable, visible results.
Spectracide Weed Stop For Lawns Plus Crabgrass Killer

This Spectracide formula is a ready-to-use option that kills more than 470 weed types, including dandelion, chickweed, clover, crabgrass, and yellow nutsedge. Visible results can appear in as little as five hours after application when used as directed. The broad weed spectrum makes it a versatile choice for homeowners dealing with multiple weed species in their lawns, though you should verify compatibility with your specific grass type and follow label directions to protect desirable turf.
Spectracide Weed Stop For Lawns Plus Crabgrass Killer Concentrate

Concentrate form from Spectracide offers the same “kills weeds, not the lawn” approach as the ready-to-use version, but in a concentrate that allows for customized mixing. It targets crabgrass along with 470+ listed weed types when used according to the label. This option can be cost-effective for larger yards or for those who prefer a DIY mixing approach for precise application rates, ensuring safe use on respective turf types.
Scotts Turf Builder Triple Action1

Scotts Turf Builder Triple Action1 combines three benefits in one product: weed killing, crabgrass prevention, and lawn feeding. It targets a variety of broadleaf weeds such as dandelion, clover, and chickweed while providing a preventive barrier against crabgrass for several months. The lawn fertilizer component helps grow a thicker, greener lawn, potentially reducing future weed establishment. This option suits gardeners looking for proactive weed prevention alongside nourishment for their turf.
Buying Guide
- Weed scope: Consider whether you need control of broadleaf weeds only or also crabgrass and other grassy weeds.
- Application type: Ready-to-use sprays are convenient, while concentrates offer cost savings for larger lawns.
- Grass tolerance: Check compatibility with your grass type (Bermudagrass, fescue, Kentucky bluegrass, etc.) to avoid damage.
- Mode of action: Some products kill existing weeds; others focus on prevention or post-emergent control to reduce future growth.
- Safety and timing: Follow label guidance for pet and child safety, drying times, and best application windows for weed life cycles.
- Results timeframe: Visible results can vary from hours to days; plan treatments with your lawn season in mind.
- Environmental considerations: Choose products with minimized runoff risk and appropriate OMRI listings if you garden organically.
- Economy: Compare per-area coverage and bottle size to estimate cost per square foot for longer-term lawn care.
- Long-term lawn care: Combine weed control with proper mowing height, watering practices, and soil health for lasting results.
- Warranty and labels: Always read the product label for exact weeds listed, soil conditions, and application restrictions.
