As a smoker, that's always the last choice for me. I'll usually hold onto the butt until I find a trash can, or use a pocket smell-proof ash tray instead. They

As a smoker, that's always the last choice for me. I'll usually hold onto the butt until I find a trash can, or use a pocket smell-proof ash tray instead. They will eventually biodegrade, but it just looks trashy to have them on the ground.