I use a Brush with COREBRID B Fibres that are a Mitsubishi produced material, that have Properties that will reduce Static.
The fibres are very fine, and the Sales Spiel is claiming the fibres are able to go deep into the Groove. I am not sure if the depth a Brush Fibre can enter into the Groove has any value to removal of Static.
The Brush I bought was quite a bit cheaper than a Furutech Version.