Biofeedback should be done by a skilled professional.
It is one of the safest technologies available.
Like many professions, you need to find someone not only skilled but highly recommended. Use your judgment when choosing someone. It can't address all of life's problems, but with the right technician, it's amazing what can be done.
One size and one protocol does not fit all brains.
Customizing your training protocol with brain-mapping brings you the very best and fastest results which is why better providers do use them. Milder problems might not require them of course. However, when two or more problems occur, they are highly recommended.
Insurance does reimburse for ours if you have out of network benefits.