Flea Beetle Battle

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I like arugula in my salads and we like our nasturtiums too. We had some of both growing rapidly and were able to have arugula every day if we wanted. Suddenly, the leaves of both of these plants were perforated. Tiny holes appeared in almost every leaf. They were edible, but not appetizing. Anne spotted the tiny black bug that was doing the damage and I Googled, "What is making tiny holes in my arugula?" The answer came immediately and it is a common problem. Our culprits were all tiny black beetles. These things come in a variety of colors, I guess. Their name comes from their ability to jump like fleas. The internet suggested various remedies, some poisonous, (no thanks) and one that I could try immediately. These little pests are repelled by the smell of rosemary and we have two big plants. I cut a sprig and put a lot of in the planters and pots where our good plants are and Poof! No more beetles! I will refresh the rosemary regularly and hope it keeps working. Any insect beetle battles at your house?