A new insect has invaded San Diego County called Citrus Leaf Miner. This small yellow insect creates the typical Leaf Miner trail on the foliage of various citrus trees. While it is not deadly to the trees it can damage foliage and make the trees look unsightly. You can help the situation by removing the damaged foliage as it appears. While nothing can be used to eliminate an infestation the Farm Advisor has recommended using Spinosad weekly to help prevent infestation.