The Ag Commissioner's Office conducts an enhanced vine mealybug trapping program of 25 traps per square mile. By analyzing the number of males found in each of the traps, staff is able to detect new areas of infestation as well as track reductions in population.
Maps of 2014 Vine Mealybug finds in Napa County now available:
Full County Overview
Please note: Trapping was not conducted in Carneros in 2014 because the area is considered to be widely infested.
Historical data also available online. View Maps
Agricultural Commissioner's staff releases bio control agents, Anagyrus Wasps and Mealybug Destroyer, to help growers manage VMB populations. These releases are funded by Napa County Pest & Disease Control District funds.
Napa County UCCE Vine Mealybug Page
Winery Vine Mealybug Guidelines
UC Davis IPM