Planococcus ficus (Signoret), a pest of exotic origin in Coachella Valley in 1994, presented a new challenge to grape industry in California. It has spread rapidly and infests grapes in 17 counties as far North as Napa and Sonoma counties. This pest impacts wine, table and raisin grapes, a 2.3 billion crop grown on more than 800,000 acres. An effective and sustainable management program is required to suppress VMB populations and help prevent further expansion. Towards this end, the overall goal of our project would be to monitor the effectiveness of current insecticides in use on grapes for conservation as well as safeguarding them from resistance build-up through development of a resistance monitoring program by defining baseline susceptibilities of VMB in order to promote a prudent regimen of diverse chemical usage.