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State of California Department of Pesticide Regulation
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Information on Piperonyl Butoxide

See all Active Ingredients

Find information on the registration status, continuous evaluation and mitigation measures in California to regulate this active ingredient. An active ingredient is the chemical that makes a pesticide work on a target pest.

Active Ingredient: Piperonyl Butoxide
Type of Pesticide: Insecticide, Insect Growth Regulator, Miticide/Acaricide, Repellent, Fungicide/Fungistat
California Registration: Yes
Products Registered
EPA Registration: Yes
Fumigant: No
California Restricted Material: No
Toxic Air Contaminant (TAC): No
Volatile Organic Compound (VOC): No
Potential Groundwater Contaminant: No
Reevaluation Status: Active
Chemical Class: Insecticide Synergist
DPR Chemical Code: 486

Risk Evaluation and Mitigation Documents

  • June 2026 - California Notice - Decision to Begin Reevaluation of Specified Total Release Fogger (TRF) Products for Indoor Consumer Use
  • June 2026 - Decision to Begin Reevaluation of Specified Total Release Fogger (TRF) Products for Indoor Consumer Use - English pdf  
  • June 2026 - Decision to Begin Reevaluation of Specified Total Release Fogger (TRF) Products for Indoor Consumer Use - Spanish pdf  
  • June 2026 - List of Products Included in the TRF Reevaluation - English pdf  
  • June 2026 - List of Products Included in the TRF Reevaluation - Spanish pdf  
  • May 2026 - Notice of Investigation of Total Release Foggers and Intent to Begin Reevaluation
  • May 2026 - Pesticide Investigation into Reported Illnesses Related to Total Release Foggers (TRFs) - English pdf  
  • May 2026 - Pesticide Investigation into Reported Illnesses Related to Total Release Foggers (TRFs) - Spanish pdf  
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