Stethorus punctillum - Spider Mite Destroyer

They're not exactly a silver bullet solution to spider mites, it might take a while and you may still lose the plant if you're trying to save one, but these little dudes are NUTS.

Predatory mite blend was great and seems to have helped spider mite problem a lot, but the spidermite destroyer shipment contained mostly dead bugs even though it was shipped with an ice pack and the bugs were promptly released. There were maybe 10 bugs out of 50 that survived shipping.