Gateway on Pesticide Hazards and Safe Pest Management

Beyond Pesticides offers resources below to evaluate the health and ecological effects of specific chemical exposure from ACTIVE INGREDIENTS in pesticide products, as well as regulatory information and supporting scientific documents. Because various pesticide products can contain more than one active ingredient, it is important to READ the LABEL to determine chemical components.

With 192 different active ingredients and counting, it is essential to establish the connection between the use of these chemicals and their respective hazards.

View the step-by-step guide on how to search for the active ingredient(s) in pesticide products below:

1. Go to U.S. EPA's Pesticide Product and Label System and enter the product name. The generic product name may vary.
   
2. After searching, click on the chemical ingredients tab or the link for the most recent label to find Active Ingredients.
                Chemical List                                            Label List 
   
   If one selects the chemical ingredients tab, skip to Step 4 . If not, proceed to step number 3
   
   
3. To find the active ingredient(s) on the label, search for the page in the document containing the date of registration. Usually, the active ingredients section occurs within the first few pages of the label document.
   
   
4. Return to the Beyond Pesticides Gateway and search for the active ingredient name in the yellow box to the right or from the list below. 
   
   

Dithiopyr

General Information

• Product Names:

  Dynamo 40 WSP Herbicide (Nufarm Americas)
  Snap PAC Fertilizer With Crabgrass Preventer (Scotts Company)
  Greenview Green Power Crabgrass Prevention And Control (Lebanon Seaboard Corporation)
  Dimension 80 Turf Herbicide With Plant Food (Knox Fertilizer Company)
  Roundup Ready-To-Use Extended Control Weed & Grass Killer 1 Plus Weed formulated with glyphosate (Monsanto)
  Swiss Farms Crabgrass Preventer (Swiss Farms)

• Chemical Class: Pyridinecarboxylic acid
• Uses: Lawns, Ornimental plants
• Alternatives: Organic Lawn Managment
• Beyond Pesticides rating: Toxic

Health and Environmental Effects

• Cancer: Not documented
• Endocrine Disruption: Yes (46)
• Reproductive Effects: Not documented
• Neurotoxicity: Not documented
• Kidney/Liver Damage: Not documented
• Sensitizer/ Irritant: Not documented
• Birth/Developmental: Not documented
• Detected in Groundwater: Yes (55)
• Potential Leacher: Not documented
• Toxic to Birds: Not documented
• Toxic to Fish/Aquatic Organisms: Yes (46)
• Toxic to Bees: Yes (56)

Residential Uses as Found in the ManageSafe™ Database

• Annual Bluegrass
• Crabgrass
• Knotweed
• Chickweed

Additional Information

• Regulatory Status:
  • EPA Dithiopyr Interim Registration Review Decision (12/2020)
• Supporting information:
  • PAN Pesticides Database:Dithiopyr (Pesticide Action Network)
  • Ontario List Nine Chemical
• Studies:
• Assessing the Presence of Current-Use Pesticides in Mid-Elevation Sierra Nevada Streams Using Passive Samplers, California, 2018–19. De Parsia, M.D., Orlando, J.L., and Hladik, M.L., 2023, Assessing the presence of current-use pesticides in mid-elevation Sierra Nevada streams using passive samplers, California, 2018–19: U.S. Geological Survey Scientific Investigations Report 2022–5129, 31 p., https://doi.org/10.3133/sir20225129.
• Abiotic and Biotic Degradation of Dithiopyr in Golf Course Greens. Hong, S. and Smith, A. (1996) Abiotic and Biotic Degradation of Dithiopyr in Golf Course Greens, Journal of Agricultural and Food Chemistry. Available at: https://pubs.acs.org/doi/abs/10.1021/jf950768g.