I guess I should report, the neem oil spray didn't work for me - mites reappeared on my citrus as soon as we had a hot sunny day. Sad to say I didn't have the time or lets say the patience to try the hot dip, as I didn't want to risk my crop of young peppers, so I hucked the poor citrus trees outdoors in freezing february.
On the up side, I no longer have a mite problem!