One-Shot Weed & Grass Killer2, 32 oz, Ready-To-Use Spray One Application Kills & Prevents Weeds for up to 5 Months

Spectracide® One-Shot™ Weed & Grass Killer ready-to-use spray works fast to kill unwanted weeds and grass. This powerful formula kills from the leaves to the roots and prevents regrowth for up to five months. Plus, it works quickly, with visible results same day. Clear out unwanted vegetation on walkways, driveways and patios. Avoid spraying this product onto desirable plants, lawn grasses, shrubs or trees. Spectracide® One-Shot™ Weed & Grass Killer's formula gives you control over weeds and grass, roots and all.

  • KILLS & PREVENTS WEEDS: One application kills and prevents weeds for up to 5 months
  • FAST-ACTING: Visible results same day
  • KILLS THE ROOT: Kills weeds and grasses down to the root
  • READY TO USE: This 32-oz formula is pre-mixed and ready to use
  • RAINPROOF WITHIN 1 HOUR: Rainproof within 1 hour of application

Active Ingredients

Diquat Dibromide 0.090%
Imazapyr, Isopropylamine salt 0.148%
Dicamba, Dimethylamine salt 0.030%
Other Ingredients: 99.732%
Total: 100.000%
  • 32 fl oz

It is a violation of Federal law to use this product in a manner inconsistent with its labeling.

STOP. Read Entire Label Before Use.

Pets and people may re-enter treated area once sprays have dried.


  • DO NOT apply this product in a way that will contact any person or pet, either directly or through drift.
  • Keep people and pets out of the area during application.
  • Apply on a sunny day with temperatures above 60°F.
  • DO NOT apply to or allow product to drift onto desirable plants.
  • Only apply to areas where no vegetation is desired for one year.
  • Avoid product runoff to nearby desirable plants.
  • Protect desirable plants with a piece of plastic or cardboard.
  • If desirable plants are accidentally sprayed, wash plants with water immediately.
  • DO NOT apply near bodies of water, including fish pools, ponds, lakes or streams.
  • DO NOT apply over the root systems of desirable plants. For trees and shrubs, DO NOT apply closer than twice the distance from the trunk to the dripline, as roots may be within this area.
  • DO NOT apply to slopes in landscape, as movement on soil surfaces may damage desirable plants downslope.
  • DO NOT apply next to a fence if desirable vegetation is growing on the other side, or if future planting is intended.
  • DO NOT use before planting lawns, fruits, vegetables, flowers or other plants because this product remains active in soil for up to one year.
  • In soils with heavy clay, weed control may exceed one year.
  • DO NOT use on desirable lawns.
  • The single max use rate is 1 gal of product per 500 sq ft (equivalent to 0.007 lb diquat dibromide, 0.012 lb imazapyr, isopropylamine salt and 0.002 lb dicamba, dimethylamine salt per 500 sq ft).
  • The maximum yearly use rate is 3 gal of product per 500 sq ft (a total of 0.021 lb diquat dibromide, 0.036 lb imazapyr, isopropylamine salt and 0.006 lb dicamba, dimethylamine salt per 500 sq ft).
  • The maximum number of applications per year is three.
  • The minimum reapplication interval is three months.
Pesticide Storage: Store in cool, dry area away from heat or open flame.
Pesticide Disposal: Nonrefillable container. DO NOT reuse or refill this container. If empty: Place in trash or offer for recycling if available. If partly filled: Call your local solid waste agency for disposal instructions. Never place unused product down any indoor or outdoor drain.
If in Eyes:
  • Hold eye open and rinse slowly and gently with water for 15-20 minutes. Remove contact lenses, if present, after the first 5 minutes, then continue rinsing eye.
  • Call a Poison Control Center or doctor for treatment advice.
If on Skin or Clothing:
  • Take off contaminated clothing.
  • Rinse skin immediately with plenty of water for 15-20 minutes.
  • Call a Poison Control Center or doctor for treatment advice.
Have the product container or label with you when calling a Poison Control Center or doctor, or going for treatment. You may also contact 1-800-917-5438 for emergency medical treatment information.
Hazards to Humans and Domestic Animals
Causes moderate eye irritation. Avoid contact with eyes or clothing. Wash thoroughly with soap and water after handling and before eating, drinking, chewing gum, using tobacco or using the toilet. Prolonged or frequently repeated skin contact may cause allergic reactions in some individuals.
Environmental Hazards
This pesticide is toxic to aquatic invertebrates. To protect the environment, DO NOT allow pesticide to enter or run off into storm drains, drainage ditches, gutters or surface waters. Applying this product in calm weather when rain is not predicted for the next 24 hours will help ensure that wind or rain does not blow or wash pesticide off the treatment area. Rinsing application equipment over the treated area will help avoid runoff to water bodies or drainage systems.
NOTICE: To the extent consistent with applicable law, buyer assumes all responsibility for safety and use not in accordance with directions.
Questions & Comments?
Call 1-800-917-5438 or visit our website at