Here seems to be logical system to catch mites from hives in 3 weeks. Read better here.http://www.xs4all.nl/~jtemp/dronemethod.html
You take your hive 4 feets apart and you put new hive to old place.
Take queen and a frame of young larvas to new hive.
After a week larvas are capped and mites are inside brood. Then you take the brood frame and wash cells clean and dry in the air.
In old hive there is no more open brood. Mites are free. Then you give frame with eggs and young larvas to hive, and free mites enter to larvas beforen capping. when brood are capped, mites are inside brood. You kill those brood and wash cells with garden hose .
You devide again old hive and catch free mites from bees. After that you put cleaned hive parts together.
After 3 weeks all brood are emerged and mites are free in old hive, but you must destroy all dronecells. Then you make final catching with larvas.
After 3 weeks your hive is very clean and queen is able to continue all the time new brood. I have hera that men have handled with chemicals brood hive an it has violated badly larvas. Also I have found that apistan strip may make queen sterile. It has happened to many times.