This project was undertaken to quantitatively evaluate fruit fly infestation levels in zucchinis grown in Queensland for export to NZ. The fruit fly which attacks cucurbit crops including zucchinis in Queensland is Bactrocera cucumis. This study evaluated the ability of a quality production system to reduce infestation levels of B.cucumis at two selected key points in the commercial production pathway. This enabled the efficacy of field control methods and of packing shed quality control and transport security in reducing fruit fly infestation levels to be quantified.