Its recommended you use a rag or paper towel soaked in neem oil and wipe down each leaf, one at a time. Be thorough. Watch using insecticide, harmless to humans doesn't necessarily mean harmless to humans if smoked and consumed. Spend a good amount of time and a strong attention to detail when wiping down the plant. If you catch it soon, this could be the only step you have to take to annihilate those mother fuckers. Usually, mites are a sign of a dirty grow environment. If this is the case, clean the place up! Hygine is a huge part of growing. Sorry for the lecture but I want to see ya out of this! I really hate those stickin mites!