Reregistration of Consumer Pesticides:

1
Reregistration of Consumer Pesticides
Mosquito Misting Systems

• US Environmental Protection Agency
• December 13, 2005

2
Agenda

• What is Reregistration?
• How are misting systems assessed in
  Reregistration?
• What do the risk assessments tell us?
• Whats next for misting systems?

3
Reregistration under FIFRA

• Reregistration assesses risk for all pesticides
  registered before November 1984
• Ensure risk assessments meet current scientific
  standards
• Decisions published in Reregistration Eligibility
  Decision (RED) documents
• REDs include measures to mitigate risks of concern

4
Risk Assessments in REDs

• Risk Hazard (toxicity) x Exposure
• Consider risks from various routes of exposure
• Food Drinking Water
• Residential
• Occupational
• Strive to mitigate risks of concern, while
  minimizing disruption to uses

5
Residential Misting System Risk Assessments

• Residential Mosquito Misting Systems (MMS)
  assessed for
• Pyrethrins
• Piperonyl butoxide
• Permethrin

6
Residential Misting System Risk Assessments

• Routes of Possible Exposure
• Inhalation, Dermal, Incidental Oral
• Time frame of exposures
• Acute (1 day), Short-term (1-30 days),
  Intermediate-term (1-6 months)
• Populations Potentially Exposed
• Occupational and Residential Handlers
• Residential Outdoor Bystander Exposures (Adult
  and Toddler)

7
Variables in Mosquito Misting System Risk
Assessments

• Holding tank size
• Spray release height
• Number of spray events
• Duration of spray events
• Application rates
• Nozzle coverage area

8
Mosquito Misting Systems Risk Summary

• Assessments based on best available information
• Some uncertainty in input variables
• Current assessments show most scenarios are not
  of concern

9
Whats Next for Misting Systems?

• More specific label language
• Data requirements
• Registration review
• Possible assessment refinements

10
Public Participation

• Public involvement vital to EPAs pesticide
  decision making
• Permethrin, Pyrethrins, and PBO REDs scheduled
  for early 2006
• Docket schedule for reregistration comment
  periods on internet www.epa.gov/oppsrrd1/reregist
  ration/public_comment_schedule.htm

11
Information on EPA Website

• EPA Office of Pesticide Programs
• www.epa.gov/pesticides/
• Pesticide Reregistration
• www.epa.gov/pesticides/reregistration/
• Schedule
• www.epa.gov/pesticides/reregistration/candidates.h
  tm
• REDs
• www.epa.gov/pesticides/reregistration/status.htm

12
SRRD Contact Information

• Public Health Issues Susan Jennings
  jennings.susan_at_epa.gov
• Permethrin Jackie Guerry
• guerry.jacqueline_at_epa.gov
• Pyrethrins PBO Cathryn OConnell
• oconnell.cathryn_at_epa.gov