        Hydramethylnon Registration Review: Registrant Inquiry Summary
                               December 17, 2012
                                       
Purpose of inquiry:
In preparation for development of the hydramethylnon registration review workplan, on November 9, 2012, the Agency reached out via e-mail to two of the hydramethylnon registrants, BASF Corporation and Ambrands, to obtain clarification on specific product labels.  This information on actual use and usage will allow the Agency to conduct a more realistic risk assessment and could preclude the use of conservative assumptions that may result in label mitigation that could be unnecessarily restrictive. 

General summary of questions sent to BASF Corporation and Ambrands:
1)  The registrants were asked to clarify rates on several uses, specifically on fire ant baits and the use on pineapple in Hawaii.  EPA requested characterization of usage and typical use rates.  

2) The companies were asked to provide information to help inform the Agency on how widely used these products are for specific crops and pests. 

3) Additional information on fire ant bait stations was requested, including the construction and composition.

Results:
To date the Agency has received information from Ambrands that includes label rates for their Amdro products.  If additional information from registrants is received in a timely fashion, it will be incorporated into the work plans.  The hydramethylnon registration review preliminary work plan docket is scheduled to open December 2012.
