Hi-Yield Super Concentrate Killzall Weed & Grass Killer

Hi-Yield Super Concentrate Killzall

Hi-Yield Super Concentrate Killzall Weed & Grass Killer is a non-selective, systemic herbicide concentrate designed for total vegetation control.

This professional-strength formula contains 41% glyphosate and a double-surfactant system that helps the spray spread, stick, and penetrate leaf surfaces for faster uptake and dependable results.

Note: This non-selective product will injure or kill most vegetation it contacts.

Why Use

• Systemic, root-killing action helps prevent regrowth
• Controls annual and perennial weeds, grasses, brush, and vines
• Double-surfactant formula improves coverage and absorption
• Fast drying and rainfast in about 2 hours
• Concentrated formula treats large areas economically
• Ideal for lawn renovation and site preparation projects

When to Use

• When weeds and grasses are actively growing for best results
• During warm weather with temperatures above about 60°F
• On calm days to minimize drift
• When rain is not expected for several hours
• Before weeds flower and produce seeds for long-term control

Retreatment

• Repeat applications may be required for tough perennial weeds, brush, or dense growth.
• Allow plants to regrow to an active growing stage before retreating.
• New weeds emerging from seed after treatment may require additional applications.
• For lawn renovation or site prep, wait until complete kill is observed before replanting.
• Always follow label directions regarding retreatment timing.

Pro Tips

• Use a spray shield or cardboard barrier near desirable plants.
• Apply during dry conditions so the product can fully absorb.
• For stubborn weeds, treat when plants are actively growing and not drought-stressed.
• Mark treated areas to prevent accidental overspray.
• Always read and follow the product label for complete instructions and restrictions.