even though you think you have got rid of them, you do not want them back now - as the chemical taste stays in the bud the nearer to harvest, and because they are just plain evil!lol.

if i were you i would follow up now with a live predatory insect to feed on any remaining mites that have hatched since.

after this harvest make sure you clean you grow room THOUROUGHLY with a 5% bleach solution.

plants look spot on despite your problems - well done. What strain are they?