I have not had any issues with Mites for 3 or 4 grows but what I have started doing is
setting up a Lady Bug home around the middle of Veg. They are great hunters and just
spend all day working there way up and down the leafs looking for a meal
Anyway they can be purchased 1000 at a time from Orchard Supply or on line.
The best approach I have found is to use a cloning tray and lid. Add a wet sponge
for water (need to keep it moist) and some Raisins for Food, close the top air vents
with just a little room for the smart ones to find a way out. This set up will last through
Flower and you will still have some Lady Bugs present. They will multiply in there house and
as long as you keep there escape down to a minimum will last a very long time. the problem
most people just open the container and let them out, well in a few days they are all gone.
But again I have not had any problems and this has only been a precaution to help make
sure they don't come back