The evaluation of residential exposure and health risks associated with pesticide use requires an understanding of how, where, when, and why each pesticide is used.  Residential exposure assessment for a pesticide presents unique challenges due to the complex and dynamic nature of this environment.  The Residential Exposure Joint Venture (REJV) consisting of several member companies that sell consumer products was formed under the auspices of the Consumer Specialty Products Association (CSPA) to address product use and usage information.  The REJV survey is a diary-based survey that follows a nationally representative sample of households during a 12 month time period capturing basic information about pesticide product use in and around residential sites allowing individual and concurrent product use events over time.  A total of 9,726 households participated in this study from 2012 to 2013.  Each household completed an inventory of all pesticide products they have in their home and each month reported any new purchase products.  Each month, participants would complete a diary questionnaire of pesticide usage recording product, date/time, site, method, and type of application.  A total of 4,574 households completed the full 12 months of the survey.  This data is critical in generating probabilities or a temporal use pattern that can be used in calendar-based probabilistic exposure models (i.e., Cumulative and Aggregate Risk Evaluation System (CARES) or Stochastic Human Exposure and Dose Simulation (SHEDS).  Also, the likelihood of daily co-occurrence can be estimated in different manners, e.g., use of the same product on multiple sites, multiple applications of same product to the same site, or multiple products containing class of pesticides to multiple sites.  This poster will describe the design and implementation of the survey, as well as, explore the use of this data in probabilistic residential models.

Residential Exposure Joint Venture (REJV): National pesticide use survey - design, analysis, and results

248th National Meeting (2014)

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