Two experiments were conducted in an effort to determine the relationship between ultrasound attenuation and lint cleaner waste density. The first experiment indicated that there was a strong correlation between ultrasound attenuation and cotton fiber density. The experiment also demonstrated a temperature dependence of ultrasound attenuation and no significant humidity influence. The second experiment developed the relationship between lint cleaner waste components and ultrasound attenuation. This investigation revealed that waste composed of mote trash attenuated ultrasound approximately two times greater than waste consisting of stick or leaf trash.