Answer: I have also seen these small, red mites you speak of in my garden each year. Usually there are only a few of them and they appear to not harm any plants. In fact, I believe they are harmless. The mites we need to worry about are spider mites and they are very small. You often don't see their damage until the leaves are covered with webbing and have many yellow stipples on them. Spider mites can cause great damage, but are controlled with regular water misting (they like a dry environment) and spraying insecticidal soap. As long as the red mites aren't causing damage, I'd leave them alone.
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