Patch of grass or mulch near by, or in a storm drain if there is one. Otherwise I continue carrying it until I get to such a place. If I’m in inside, like a mall or an airport, I pour in a restroom sink and then rinse it down the sink drain with water from the tap.
But it rarely comes to that. I generally finish whatever my drink is long before I have a need to throw the container out.
Where do you pour the liquid? Most trash cans out in public do not have drains conveniently located next to them.
Patch of grass or mulch near by, or in a storm drain if there is one. Otherwise I continue carrying it until I get to such a place. If I’m in inside, like a mall or an airport, I pour in a restroom sink and then rinse it down the sink drain with water from the tap.
But it rarely comes to that. I generally finish whatever my drink is long before I have a need to throw the container out.