That's an excellent question that many of us have probably wondered about while standing in front of a public bin with a half-finished drink. The best approach is actually quite simple and makes a big difference in keeping our shared spaces clean.
First, if you have a bottle with liquid remaining, try to finish it if possible. If you can't, look for a designated liquid disposal drain - some modern trash stations have these specifically for drinks. When these aren't available, the key is to pour the liquid out slowly and carefully directly into the trash can opening before disposing of the container separately. This prevents the liquid from sloshing out later and creating that sticky mess we've all encountered.
For coffee cups with lids, remove the lid first and pour any remaining liquid out before tossing both pieces. If you're dealing with thicker liquids like smoothies or shakes, try to find a restroom to rinse the container first. Many cities are now installing "smart" bins with separate compartments for liquids - keep an eye out for these eco-friendly options.
Remember, taking those extra few seconds to dispose of liquids properly helps prevent overflowing bins, reduces odors, and makes the job much easier for sanitation workers. It's a small act of civic responsibility that makes our urban environment more pleasant for everyone.