I spent a while searching the forums and found bits and pieces of advice, but nothing that really fully answered the question of how to mute your bass the most. I live in a basement apartment, directly below my upstairs neighbors bedroom, and given the house is over 100 years old, the insulation is not the best. So began my search for how to quiet my instrument. This is the solution that I came up with, and am actually quite proud of, and wanted to share for any other's in a similar situation: Seriously, I cannot stress how much this quiets the bass. Even arco can be done during the night and my neighbor can't hear a peep. Obviously, the I wouldn't expect a very complex sound from it, but hopefully this will help anyone who is trying to dampen their instrument as much as possible. Also, if you have any ideas to make it even quieter, chime in!