I use the gasoline outside, and dispose of it outside. No rags or cloth involved. The chain goes into the ultrasonic cleaner with a strong detergent to remove all of the petroleum based residue and any dissolved wax or grease. Then into pure water into the ultrasonic cleaner after rinsing extesively to remove the detergent. Then shaken into denatured alcohol to remove the water. You’re left with a very clean dry chain that takes up wax easily.