According to Hal Huggins many people have gotten completely better without using chelators.

If you eat healthy, and get enough nutrients to correct deficiencies that were caused by mercury (I'm thinking magnesium, selenium, iodine, etc..) then I do believe you can make a complete recovery over time without DMSA or ALA. Supplementing is really important to help this process out. Eating healthy fat is also crucial as bile is one of the natural ways the body moves mercury out of the body.

Though I do believe ALA is very good at what it does, there are other ways but they will probably take more time.