I used this stuff recently to kill mites that were on some elephant ears that came from ebay, it took a couple of applications but seemed to do the trick. I would be careful with it though, I applied it to one of the 3 plants I have in high temperatures and it caused a little leaf damage, not severe but I notice. I would not spray it on a hot day. I was a bit skeptical at first as its a 3 in one product, fungicide, insecticide, mite killer, but it specifically mentioned mites on the label.
Garden Safe® Brand Fungicide3® Ready-to-Use | Garden Safe