Teresa from Flushing, Mi writes
Optigard Flex Liquid is labeled for carpentar bees. You will use at a rate of 0.27 - 5.41 oz. per 1 - 10 gallons of water. it does provide a 30 day residual outdoors. We also suggest that you read our guide on how to control carpentar bees.
Answer last updated on: 05/07/2018