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FMC TECHNOLOGIES

Dismiss Herbicide

Dismiss Herbicide is a selective, post-emergent herbicide containing the active ingredient Sulfentrazone. It is regarded as one of the best herbicides for sedge weed control in residential and commercial turf. Problematic sedges such as Green Kylinga and Yellow Nutsedge can be eliminated as quickly as one to two days with a Dismiss application.

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Dismiss Herbicide Product Page
Min : 87.98 - Max : 270.11
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Price as of
10/12/25
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Dismiss Turf Herbicide, manufactured by FMC Professional Solutions, is a selective post-emergent herbicide for control of a variety of broadleaf weeds and sedges in healthy turf areas. 

This product is a flowable suspension concentrate containing 4 lbs of active ingredient per gallon. Dismiss herbicide's mode of action involves uptake by both weed roots and shoots.

Dismiss Herbicide attacks the surface of the weeds and goes even further, getting into the soil to penetrate the sedge tubers. This penetrating soil action helps to prevent future outbreaks of sedges.

Tools Needed

You will need a handheld pump sprayer, backpack sprayer, or spray rig. We recommend a handheld 1-gallon pump sprayer for small lawn jobs or a 4-gallon backpack sprayer.

How to Use

Selective Herbicide

  • Step 1: Determine how much Dismiss Herbicide you need by measuring the square footage of the treatment area. To do this, measure the length and width of the treatment area in feet, then multiply them together (length X width = square footage). For warm-seasoned grass, use 0.18 to 0.275 fl. oz. of Dismiss Herbicide per 0.5 to 4 gallons of water per 1,000 sq. ft. To treat cool-seasoned grass, mix use 0.092 to 0.18 fl. oz. of product per 0.5 to 4.0 gallons of water per 1,000 sq. ft. If you are treating creeping bentgrass, mix 0.092 fl. oz. of product per 0.5 to 4.0 gallons of water per 1,000 sq. ft. Refer to the product label for specific application rates and restrictions. 
  • Step 2:  Fill your selected spray tank a 1/4th of the way with water and then add the appropriate amount of Dismiss Herbicide. Fill the sprayer the rest of the way with water, shake well, and you are ready to spray.
  • Step 3: Spray target weeds until wet but not to the point of runoff. An excellent technique is to avoid side-to-side movement of the nozzle when spraying. To ensure proper application, spray the nozzle directly with no movement close to the weeds.

Where to Use

Dismiss Herbicide is for use in and around commercial and residential turf, including golf courses, lawns, sports fields, cemeteries, parks, campgrounds, recreational areas, roadsides, school grounds, and sod farms.

When to Use

Apply on mild days when wind speeds are low to minimize drift. Dismiss is best applied when turfgrasses are under minimal stress and are not weakened by weather, mechanical, chemical, disease, or other related stress.

For the most effective results against most weed species, time your application when the weeds are young and actively growing. For more extended residual control or heavier sedge populations, a second application 30 days following the first may be needed for optimum control.

Safety Information

Dismiss Herbicide is safe to use around children and pets when applied according to the product label instructions. Always wear the appropriate personal protective equipment (PPE) when handling and applying this product.

Do not allow people and pets to enter the treatment area until the spray has dried.

Special Considerations

The use of surfactants is not recommended with Dismiss Herbicide. 

AvailabilityOnline
Restricted UseNo
Shipping Restrictions64 Ounce: AK, CA, CT, MA, NY, VT
6 Ounce: AK, CA, CT, MA, NY, VT
BrandFMC TECHNOLOGIES
Keith's Pro Tips"Put your sprayer nozzle on a fan spray setting to get even coverage of Dismiss Herbicide on the plants you want going."
Product DrawbacksSince it is a suspended herbicide, Dismiss Herbicide mixtures may require you to constantly agitate the sprayer tank for best results.
Target PestsDismiss Turf Herbicide can control or suppress Annual Spurge, Bittercress, Black Medic, Buckhorn Plantain, Buttercups, Carolina Geranium, Carpetweed, Catchweed Bedstraw, Cinqufoil, Clover, Common Chickweed, Common Groundsel, Common Lambsquarters, Common Lespedeza, Common Mallow, Common Purslane, Copperleaf, Creeping Woodsorrel, Cudweed, Curly Dock, Cylindric Sedge, Dandelion, Dollarweed, Eclipta, Evening Primrose, False Green Kyllinga, Fiddleneck, Filaree, Florida Beggarweed, Florida Pusley, Galinsoga, Globe Sedge, Goldenrod, Goosegrass, Green Kyllinga, Ground Ivy, Henbit, Johnny-Jump-Up Violet, Knawel, Kochia, Lawn Burweed, London Rocket, Mouseear Chickweed, Parsley Piert, Pennsylvania Smartweed, Pineapple weed, Prostrate Knotweed, Prostrate Spurge, Puncture Weed, Purple Nutsedge, Red Sorrel, Redroot Pigweed, Redweed, Shepard's Purse, Smooth Pigweed, Speedwell, Spotted Spurge, Star of Bethleham, Surinam Sedge, Texas Sedge, Tumble weed, Velvetleaf, Wild Garlic, Wild Onion, Wild Violet, Yellow Nutsedge, and Yellow Woodsorrel.
Application EquipmentBackpack Sprayer, Hose End Sprayer, Pump Sprayer
Application MethodsBroadcast Spray, Spot Treatment
Active IngredientSulfentrazone 39.6%
Product TypeHerbicide
FormulationEmulsifiable Concentrate (EC)
Application RateMix Dismiss Turf Herbicide at a rate of 0.18-0.275 of an ounce per 1,000 square feet or 1 gallon of water for broadleaf weed control. Maximum rate of 4-8 ounces per acre.
Shelf LifeDismiss Turf Herbicide has a shelf life of up to 2 years if stored properly according to the label.
YieldEach finished gallon of Dismiss Turf Herbicide should cover approximately 1,000 square feet.
Use SitesOutdoors
Time to KillDismiss Turf Herbicide begins to kill immediately as soon as the target weeds are contacted by the chemical, but may take up to several weeks to completely kill off unwanted vegetation.
Comparable ProductsExpel Herbicide, Sulfentrazone 4F, Surge Herbicide, Sulfentrazone 4SC
Incompatible Home SidingBrick, Hardie Plank, Stone Veneer, Stucco, Wood, Vinyl
EPA Registration #279-3295
More Information
Restricted Use No
Shipping Restrictions AK, CA, CT, MA, NY
Availability Online
Signal Word CAUTION
Keith's Pro Tip "Put your sprayer nozzle on a fan spray setting to get even coverage of Dismiss Herbicide on the plants you want going."
Target Pests Multi Annual Spurge, Bittercress, Black Medic, Buckhorn Plantain, Buttercup, Carolina Geranium, Carpetweed, Catchweed Bedstraw, Cinquefoil, Clover, Common Chickweed, Common Groundsel, Common Lambsquarters, Common Lespedeza, Common Mallow, Common Purslane, Copperleaf, Creeping Woodsorrel, Cudweed, Curly Dock, Cylindric Sedge, Dandelion, Dollarweed, Eclipta, Evening Primrose, False Green Kyllinga, Fiddleneck, Filaree, Florida Beggarweed, Florida Pusley, Galinsoga, Globe Sedge, Green Kylinga, Henbit, Knawel, Kochia, Lawn Burweed, London Rocket, Mouseear Chickweed, Parsley Piert, Pennsylvania Smartweed, Pineapple_Weed, Prostrate Spurge, Prostrate_Knotweed, Puncture Weed, Purple Nutsedge, Red Sorrel, Redroot Pigweed, Redweed, Shepherdspurse, Smooth Pigweed, Speedwell, Spotted Spurge, Spurweed, Star of Bethlehem, Surinam Sedge, Texas Sedge, Tumble Pigweed, Velvetleaf, Violet Johnny-jump-up, Wild Garlic, Wild Onion, Yellow_Nutsedge, Yellow_Woodsorrel, Goldenrod, Ground Ivy, Wild Violet
Time to Kill Dismiss Turf Herbicide begins to kill immediately as soon as the target weeds are contacted by the chemical, but may take up to several weeks to completely kill off unwanted vegetation.
Chemical Type Herbicide
Formulation Emulsifiable Concentrate (EC)
Application Methods Broadcast Spray, Spot Treatment
Product Drawbacks Since it is a suspended herbicide, Dismiss Herbicide mixtures may require you to constantly agitate the sprayer tank for best results.
Active Ingredient Sulfentrazone 39.6%
Application Equipment Backpack Sprayer, Hose End Sprayer, Pump Sprayer
Mix Rate Mix Dismiss Turf Herbicide at a rate of 0.18-0.275 of an ounce per 1,000 square feet or 1 gallon of water for broadleaf weed control. Maximum rate of 4-8 ounces per acre.
Use Sites Outdoors
Yield Each finished gallon of Dismiss Turf Herbicide should cover approximately 1,000 square feet.
EPA Registration No. 279-3295
Shelf Life Dismiss Turf Herbicide has a shelf life of up to 2 years if stored properly according to the label.
Comparable Products Expel Herbicide, Sulfentrazone 4F, Surge Herbicide, Sulfentrazone 4SC
Children or pets? No
Property Characteristics None

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