Pros

  • Highly effective at killing tough weeds and grasses quickly, down to the root.
  • Produces visible results within hours and becomes rainproof in as fast as 30 minutes.
  • Covers a large area efficiently, with one gallon making between 21 to 42 gallons of spray, treating up to 12,600 sq. ft.
  • Offers great value and quality at a price considerably cheaper than many local alternatives.
  • Consistently performs reliably across various weed control situations.
  • Easy to use when mixed according to label directions, suitable for flower beds, walkways, fences, and other yard areas.
  • Trusted as one of the best products on the market for weed control, maintaining good quality over time.
  • Kills a broad spectrum of weeds including dandelion, crabgrass, poison ivy, clover, and more.
  • Allows replanting as soon as 1 to 30 days pospplication depending on desired plants.

Cons

  • Noelective herbicide, so accidental contact with desirable plants can cause damage.
  • Requires precautions such as wearing gloves and a face mask during mixing and application to ensure safety.
  • Application should be avoided on windy days to prevent spray drift and unintended damage.
  • Some users report it kills Roundup Ready soybeans despite no label warning, indicating potential unexpected effects on certain plants.
  • Because it’s a concentrate, mixing errors could affect performance or safety if label instructions aren’t followed closely.

Bottom Line

If you want a powerful, reliable, and cost-effective weed killer for wide-ranging outdoor use, Roundup Weed & Grass Killer₄ Concentrate stands out as a top choice. Just be mindful that it’s non-selective and requires careful application to protect your desirable plants and yourself. For general yard cleanup, flower beds, and tough weed patches, it delivers fast, lasting results. If you need a product with similar strength but prefer a ready-to-use formula or something with more selective action, consider exploring other herbicides or complementary weed control products as well.

How we researched this

About this review: We pulled together findings from professional reviews and hundreds of user reviews, and cross-referenced them with ShopSavvy's pricing data from thousands of retailers to give you the short version.

Get ShopSavvy
ShopSavvy is totally free and works on all popular phones and browsers
Download ShopSavvy App

Compare prices for anything in real-time, set price alerts, watch for deals by keyword, and much more

Install ShopSavvy Browser Extension

Compare and track prices automatically while you shop online at thousands of websites.

Latest Deals

🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️

10 days ago
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️

10 days ago