Cutler recommends Saunas as far as I am aware. That it can be just as effective as chelating with DMSA. But the same thing - be careful not to overdo things to overwhelm your body.

Yes, later on would be a very good idea to do the ALA chelation. DMSA is not essential, but it is helpful in the early stages with symptoms and reducing extra cellular mercury, which is why it is recommended. Your saunas are probably doing that!

ALA IS essential, because it crosses the BBB and detoxes brain mercury and other organ mercury! It can be done alone, or WITH DMSA. AS DMSA appears to help control some of the symptoms and may increase chelation further. Though one can chelate with ALA alone and detox their brain/organs effectively, it may not be as easy. Depending on how one reacts.