HumminGuru Orbit Vinyl Record Static Remover

FWIW, the key to the Hudson Hi-Fi LP Record Cleaning Antistatic Arm Brush (hudsonhifi.com) is that the goat hair brush has carbon fiber bristles at the center.  That's why it can work with the ground cable to attached to a good ground.  If in doubt, just take a digital multimeter and measure the resistance from the carbon fibers to the end of the ground cable.