Driveway cracks invite stubborn weeds that break apart masonry and create unsightly gaps. This guide highlights five top-rated weed killers designed for cracks, joints, and adjacent hard surfaces. Each option offers fast action, weather resistance, and long-lasting prevention to reduce regrowth. We summarize key features and compare how well they protect driveways, sidewalks, and paths in American landscapes.
| Product | Brand | Key Benefit | Guard/Prevent Duration |
|---|---|---|---|
| Roundup Dual Action 365 Weed & Grass Killer Plus 12 Month Preventer | Roundup | Kills and prevents a wide range of weeds for up to 12 months | Up to 12 months |
| Roundup Dual Action Weed & Grass Killer Plus 4 Month Preventer | Roundup | Kills existing weeds and prevents new growth for up to 4 months | Up to 4 months |
| Roundup Dual Action 365 Weed & Grass Killer Plus 12 Month Preventer Refill | Roundup | Kills and prevents for up to 12 months | Up to 12 months |
| Ortho GroundClear Year Long Vegetation Killer2 Concentrate | Ortho | Kills weeds and prevents regrowth for up to 12 months | Up to 12 months |
| Spectracide Weed & Grass Killer 2 | Spectracide | Fast-acting, effective on driveways and walkways | Not specified (fast-acting) |
Note: All products listed are designed for outdoor use on hardscapes like driveways and walkways. Always follow label directions for safety, application, and timing relative to planting beds and nearby vegetation.
Roundup Dual Action 365: 12-Month Preventer
Roundup Dual Action 365 Weed & Grass Killer Plus 12 Month Preventer with Comfort Wand provides one-step weed protection for up to 12 months. It targets tough weeds and grasses, including dandelion, crabgrass, poison ivy, and other broadleaf species. The product is rainproof in as fast as 30 minutes and shows visible results within hours, making it suitable for driveways and similar hardscapes that experience regular exposure to rain and irrigation. For best results, apply to cracks and crevices when weeds are actively growing.
Roundup Dual Action: 4-Month Preventer
This Roundup option kills existing weeds down to the root and prevents new growth for up to four months. It is rainproof within 30 minutes and can deliver visible results in as fast as six hours. It is suitable for hardscapes including driveways, sidewalks, patios, areas along fences, mulched beds, and around established shrubs or trees. Use on cracks and crevices where weeds are visible but avoid lawns or turf areas.
Roundup Dual Action 12-Month Refill
The Roundup Dual Action 12 Month Refill provides ongoing weed protection for up to 12 months. The product kills and prevents a wide range of tough weeds and grasses, including clover, dandelion, crabgrass, poison ivy, and other broadleaf and grassy weeds. It’s rainproof in 30 minutes and offers visible results within hours, enabling long-term maintenance of driveway cracks and adjacent areas.
Roundup Weed & Grass Killer₄ Refill
Roundup Weed & Grass Killer₄ kills tough weeds and grasses to the root, including dandelion, crabgrass, poison ivy, and clover. It is rainproof in as fast as 30 minutes and provides visible results within hours. This refill is suitable for use in driveways and walkways, on fences, around plantings, and in gravel areas. After application, planting may be delayed per the product’s label directions.
Ortho GroundClear With Comfort Wand
Ortho GroundClear Weed and Grass Killer provides fast-acting control to kill dandelions, chickweed, crabgrass, moss, and more in patios, driveways, and landscape beds. It is OMRI Listed and allows treated areas to be safe for entry after the spray dries. Results can begin in as little as 15 minutes, with rainproof brief after-drying protection in about two hours. This product targets walkways and hardscape borders without affecting nearby lawns when used as directed.
Ortho GroundClear Year Long Vegetation Killer2
Ortho GroundClear Year Long Vegetation Killer2 concentrates on areas where no plant growth is desired for at least a year. It kills weeds, grasses, and existing vegetation and prevents regrowth for up to 12 months when used as directed. It is designed for driveways, sidewalks, fence lines, paver patios, walkways, and gravel areas, helping maintain clear, weed-free surfaces for extended periods.
Spectracide Weed & Grass Killer 2
Spectracide Weed & Grass Killer 2 is designed for driveways, walkways, and areas around trees and flower beds. It delivers a fast-acting formula with visible results in about three hours and is rainfast after 15 minutes of application, allowing quick replanting or re-seeding nearby. It’s a practical option for rapid clearance of weeds in hardscape environments.
Buying Guide: Key Purchase Considerations
- Target weeds: Consider whether you need root-kill for broadleaf weeds, grasses, moss, or brush. Some formulations offer broad-spectrum control with longer prevention.
- Longevity of prevention: If you want longer protection, look for 12-month preventers. Shorter durations may suit seasonal weed growth.
- Surface safety: Confirm compatibility with concrete, pavers, and adjacent plants. Some products are not recommended for lawns or rooted landscapes.
- Weather and rainfastness: Check label guidance on how quickly the product becomes rainfast and how soon spraying indoors or outdoors is safe after application.
- Safety and entry restrictions: Review pet and human-entry times after application and whether protective gear is required during application.
- Application method: Wand applicators, sprays for cracks, and spot treatments influence ease of use and precision in hard-to-reach areas.
- Environmental considerations: Choose products with minimized runoff risk and consider future planting plans near treated areas.
- Regulatory labels: Some products have OMRI or other certifications; verify local regulations and labeling for exterior hardscapes.
- Budget and refills: Refill availability and volume affect long-term costs; calculate yearly needs based on crack exposure and surface area.