Most effective and practical eliminator of howl-tones.
If hung behind the bridge, between the A and C strings, it will suppress the worst howl-tone.
For situations in which the full overtone spectrum should be available (which is always somewhat muted when using another howl-tone impediment), this eliminator is quickly installed.
Depending on the location of the howl-tone, there are three weights:
Low: D - E
Medium: Es - F
High: E - F sharp