There are good mites and bad mites, they are both the same minute size (almost undetectable with the naked eye) and they can change color in response to their prey, so it is next to impossible to tell the good guys from the bad guys. About the only way to tell is if you observe mite webs on your plants and your plants look like the leaves have been sucked dry of their juices, you have the bad mites. Spray those with a garlic spray to get rid of them.
Predatory mites are happiest in humid conditions, so you won’t see them in the Southwest much. They are often smaller than the prey they eat, but you can attract them with pollen-rich plants.
As we mentioned above, there are good mites and bad and you can really only tell them apart by the damage they do to your plants. (Read above.) Spider mites will also create web-like threads all over your plant leaves which will start to look speckled like the mites are sucking the juices from the leaves, which is exactly what they are doing.
Spray the front and back of all leaves with a garlic spray. Neem oil sprays work as well. Take the plant outside if it is a potted plant, wash the leaves and mites off with a powerful blast of water, relocate the plant so the mites don’t just crawl back on it after hosing them off, then spray it well with the garlic or neem oil.
Let it sit outside for a couple days for the mites to get discouraged by the spray and move their operations elsewhere.
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