Should I use pyrethrim spray in winery?

Asked September 25, 2013, 2:21 PM EDT

Wineries in the Willamette Valley are having huge problems with drosophila in both the vineyards and wineries. We are looking at using pyrethrim fogging at night once fermenters are covered. Do you have any suggestions on concentrations, types of pyrethrims and sources for such sprays in bulk instead of aerosol cans?

Yamhill County Oregon

1 Response

The fruit fly and its resulting larvae should not be causing a problem to your wine once it is in the winery. They will not survive under the fermentation conditions and can be removed at racking/pump over. You must consider the legality of use of any insecticide inside of a winery (pyrethrin or "bug spray" is an insecticide). Insecticides should only be used for the intended purpose of the product and must follow the label for intended use. Using a product for a reason other than what is outlined on the label is a violation of law and can be a problem with the status of the fruit and/or wine as a food product. Please read all labels of products before considering their use.