It worked somewhat on my offwhite nunchuk joystick, it's a lot closer to the original color, in fact the only difference is it's not the perfect white it was in the box but that's probably inevitable. As for my other nunchuk which had a more noticeable yellow tinge, the mouthwash didn't have any results as far as I can tell. First I just lightly brushed, then I scrubbed forcefully, then I brushed the joystick, let it sit for like 30 minutes, and came back and still no avail.