Neem has never failed me.

If you're infested I'd grab a no-pest strip and some neem.

If you pray the neem top to bottom (be sure to cover every surface), then apply systemically (water your plants with it) @ 1oz per gallon that will be a good start. Be careful with the no-pest strips and use 2-3 if you have a large room. Don't leave no-pest strips sitting out for months. Use them for 2-3 weeks to rid the mites then remove them or, like many people have mentioned: the mites can become immune to the strips

Repeat the neem spray in 3-4 days and then another systemic application in about 10.