At a Tomato Pest Management Workshop involving growers, researchers, crop consultants, and industry representatives in 1994, it was suggested that a series of statewide production breaks be introduced to interrupt the food supply of tomato leafliner (TLM). However, very little is known about how long a successful production break needs to be in each of the main tomato growing area. This research was designed to help fill that gap in knowledge. Some of the main factors that were examined included: the climate of the region, the level of postharvest crop hygiene used by the grower, and whether there were other plants in the area that can also act as hosts for TLM.