Photo of treated Spartina.  Author unknown.

Pesticides Currently Allowed for Use Under Permit in Washington Waters

Aquatic Plant and Algae Management | Aquatic Noxious Weed Control | Aquatic Mosquito Control | Irrigation System Weed Control | Aquatic Invasive Species Control | Adjuvants/Surfactants

 

Please be aware that the pesticide product labels provided on this page are for informational purposes only.

Current labels for the product listed on this page may be reached through the Pesticide Information Center Online (PICOL) databases.

 

Aquatic Plant and Algae Control General Permit

Pesticide Commonly Used to Control
2,4-D Amine
  • Eurasian Watermilfoil (Myriophyllum spicatum)
  • Duck Potato/Wapato/Arrowhead (Sagittaria spp.)
  • Variable-Leaf Milfoil (Myriophyllum heterophyllum)
  • Parrot Feather/Parrotfeather Milfoil (Myriophyllum aquaticum)
  • Yellow Floating-Heart/Water Fringe (Nymphoides peltata)
  • Water Primrose/Water Purslane (Ludwigia spp.)
2,4-D Ester
  • Eurasian Watermilfoil (Myriophyllum spicatum)
Bispyribac-sodium n/a
Carfentrazone-ethyl n/a
Diquat dibromide
  • Brazilian Elodea (Egeria densa Planch)
  • Elodea (Egeria spp.)
  • Common Waterweed/Elodea (Elodea canadensis Rich)
  • Pondweeds (Potamogeton spp.)
  • Curly-Leafed Pondweed (Potamogeton crispus)
  • Water Nymph/Naiad (Najas spp.)
  • Mexican Water-fern (Azolla mexicana C.)
  • Duckweed (Lemna spp., Spirodela polyrrhiza)
  • Bladderwort (Utricularia spp.)
  • Coontail/Hornwort (Ceratophyllum demersum L.)
  • Eurasian Watermilfoil (Myriophyllum spicatum)
  • Yellow Floating-Heart/Water Fringe (Nymphoides peltata)
  • Fragrant/White Waterlily (Nymphaea odorata)
Endothall (dipotassium salt)
  • Brazilian Elodea (Egeria densa Planch)
  • Pondweeds (Potamogeton spp.)
  • Water Nymph/Naiad (Najas spp.)
  • Eurasian Watermilfoil (Myriophyllum spicatum)
  • Algae
Endothall (mono salt)
  • Algae
  • Cyanobacteria/Blue-Green Algae
  • Filamentous Algae
Flumioxazin n/a
Fluridone
  • Pondweeds (Potamogeton spp.)
  • Brazilian Elodea (Egeria densa Planch)
  • Elodea (Egeria spp.)
  • Eurasian Watermilfoil (Myriophyllum spicatum)
  • Hydrilla (Hydrilla verticillata)
  • Water Nymph/Naiad (Najas spp.)
  • Duckweed (Lemna spp., Spirodela polyrrhiza)
  • Bladderwort (Utricularia spp.)
  • Fanwort (Cabomba caroliniana)
  • Freshwater Eelgrass/Tape Grass (Vallisneria spp.)
  • Lilypads (Nymphaea spp., Nuphar spp.)
Glyphosate
  • Rushes (Juncus spp.)
  • Bulrush (Scirpus spp.)
  • Water-shield (Brasenia schreberi, Brasenia spp.)
  • Yellow Flag Iris (Iris pseudacorus)
  • Duckweed (Lemna spp., Spirodela polyrhiza)
  • Purple Loosestrife (Lythrum salicaria L.)
  • Yellow Pond-Lily/Spatterdock (Nuphar spp.)
  • Fragrant/White Waterlily (Nymphaea odorata)
  • Duck Potato/Wapato/Arrowhead (Sagittaria spp.)
  • Reed Canary Grass (Phalaris arundinacea L.)
  • Cattail (Typha spp.)
Imazamox
  • Curly-leafed Pondweed (Potamogeton crispus) selectively
Imazapyr
  • Yellow Flag Iris (Iris pseudacorus)
  • Common Reed (Phragmites spp.)
  • Salt Cedar/Tamarisk (Tamarix ramosissima)
  • Tree of Heaven (Ailanthus altissima)
Penoxsulam n/a
Sodium Carbonate Peroxyhydrate
  • Product examples: GreenClean™, PAK 27™, Phycomicyn™
  • Algae
  • Filamentous Algae
Triclopyr TEA
  • Eurasian Watermilfoil (Myriophyllum spicatum)
  • Purple Loosestrife (Lythrum salicaria L.)
  • Variable-Leaf Milfoil (Myriophyllum heterophyllum)
  • Water Primrose (Ludwigia hexapetala)
  • Parrot Feather/Parrotfeather Milfoil (Myriophyllum aquaticum)
  • Yellow Floating-Heart/Water Fringe (Nymphoides peltata)
  • Water Primrose/Water Purslane (Ludwigia spp.)
Aluminum Sulfate/Sodium Aluminate
  • Phosphorus to reduce incidence of algae and blue-green algae blooms
  • Includes buffering agents
  • Note: alum is not registered as an algaecide, rather it works as an algaestat, helping to suppress algae blooms by inhibiting the nutrient phosphorous.)
Calcium Hydroxide/Oxide
  • Phosphorus to reduce incidence of algae and blue-green algae blooms
  • Includes buffering agents
  • Note: Calcium Hydroxide/Oxide is not registered as an algaecide, rather it works as an algaestat, helping to suppress algae blooms by inhibiting the nutrient phosphorous.)
Marker Dyes Used to mark where herbicides have been applied during treatment.
Shading Products Algae
Biological Water Clarifiers n/a
Barley Straw Algae

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Aquatic Noxious Weed Control General Permit

Pesticide Commonly Used to Control
2,4-D Amine
  • Knotweed
  • Yellow-Flag Iris
Bispyribac-sodium n/a
Carfentrazone-ethyl n/a
Flumioxazin n/a
Glyphosate
  • Cordgrass/Spartina (Spartina spp.)
  • Knotweed spp.
  • Phragmites
  • Loosestrife spp.
  • Yellow-Flag Iris
  • Reed Canary Grass (Phalaris arundinacea L.)
Imazamox n/a
Imazapyr
  • Cordgrass/Spartina (Spartina spp.)
  • Knotweed spp.
  • Phragmites
  • Loosestrife spp.
  • Yellow-Flag Iris
  • Reed Canary Grass (Phalaris arundinacea L.)
Penoxsulam n/a
Triclopyr TEA
  • Knotweed spp.
  • Loosestrife spp.

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Aquatic Mosquito Control General Permit

Pesticide Commonly Used to Control
Bacillus sphaericus (H-5a5b) Larva Mosquitoes
Bacillus thuringiensis israelensis Larva Mosquitoes
Malathion Adult, Larva Mosquitoes
Methoprene Pre-emergent larval mosquito control
Monomolecular Surface Films Larva, Pupa Mosquitoes
Parrafinic White Mineral Oil Larva, Pupa Mosquitoes
Spinosad Larva Mosquitoes
Temephos Larva, Pupa Mosquitoes
Etofenprox Adult Mosquitoes
Malathion Adults, Larva, Pupa Mosquitoes
Naled Adult Mosquitoes
Natural Pyrethrins Adult Mosquitoes
Permethrin Adult Mosquitoes
Piperonyl Butoxide (PBO) Synergist, used in combinations with pyrethroids for better efficacy.
Prallethrin Adult Mosquitoes
Resmethrin Adult Mosquitoes
Sumithrin (d-phenothrin) Adult Mosquitoes

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Irrigation System Weed Control

Pesticide Example Labels (PDF)
Endothall Cascade (dipotassium salt of endothall)
Teton (amine salt of endothall)
Acrolein Magnacide H® Herbicide
2013 Special Local Needs (SLN) Label
Copper K-Tea Algaecide
Cutrine® Plus Alaecide/Herbicide
Cutrine® Ultra Algaecide / Herbicide / Cyanobacteriocide
Fluridone Sonar PR Herbicide
Sonar SRP Herbicide
Sonar Q Herbicide
Sonar A.S. Herbicide
Imazapyr Habitat Herbicide
Sodium Carbonate Peroxyhydrate GreenClean Pro Algaecide
Xylene Chem T Aquatic Weed Killer

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Aquatic Invasive Species Management

Pesticide Known Control Uses
Sodium Chloride
  • Caulerpa
  • For marine and freshwater application.
Potassium Chloride
  • Zebra/Quagga Mussels
  • For marine and freshwater application.
Chlorine compounds including: chlorine dioxide, sodium chlorite, sodium hypochlorite, and calcium hypochlorite
  • Invasive Tunicates (e.g.Didemnum spp.)
  • Caulerpa
  • For marine and freshwater application.
Acetic Acid
  • Tunicates
  • biofouling organisms
  • For marine and freshwater application.
Calcium Hydroxide/Oxide (lime) and carbon dioxide
  • Echinoderms
  • biofouling organisms
  • For marine and freshwater application.
Rotenone
  • Fish
  • For freshwater application.
Antimycin-A
  • Fish
  • For freshwater application.
Potassium Permanganate (KMnO4)
  • Zebra/Quagga Mussels
  • Used to neutralize Antimycin-A and Rotenone
  • For freshwater application.
Endothall mono-salt (e.g., Hydrothol 191™)
  • Mollusks
  • Cyanobacteria
  • For freshwater application.
Sodium Carbonate Peroxyhydrate
  • Algae
  • Filamentous Algae
  • For freshwater application.
Methoprene
  • Larval mosquitoes and midges
  • For freshwater application.
Chelated copper compounds
  • Invasive invertebrates
  • Zebra/Quagga Mussels
  • For freshwater application.
Pseudomonas fluorescens strain CLO145
  • Zebra/Quagga Mussels
  • For freshwater application.
Heating/cooling (temperature alteration)
  • n/a
  • For marine and freshwater application.

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Adjuvants and Surfactants

The adjuvants and surfactants listed here may not be available for use in all permits. Check the permit you have, or are planning to get, coverage under for the specific list of adjuvants and surfactants available in that permit.

  • Agri-Dex™
  • AquatSurf™
  • Bond™
  • Bronc Max™
  • Bronc Plus Dry-EDT™
  • Class Act NG™
  • Competitor™
  • Cut-Rate
  • Cygnet Plus™
  • DestinyHC™
  • Dyne-Amic™
  • Exciter™
  • Fraction™
  • Interlock™
  • Kinetic™
  • Level 7™
  • LI-700™
  • Liberate™
  • Magnify™
  • One-Ap XL™
  • Pro AMS Plus™
  • Sinker™
  • Spray-Rite™
  • Superb HC™
  • Tactic™
  • Tronic™

 

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