That's a great and practical question! It really depends on the specific design and location of the trash can. In many modern cities, yes, public litter bins—especially those commonly placed in parks, streets, and high-traffic areas—are often designed to handle incidental liquid waste.
Many models feature small drainage holes or a grated bottom at the base of the inner liner or bucket. The main purpose is to allow any accumulated rainwater or simple liquids from discarded drinks to drain out slowly. This prevents the bin from becoming a stagnant, smelly pool of water, which helps control odors and deters pests like insects and rodents. It also reduces the overall weight for collection crews.
However, it's crucial to understand these drains are not for large volumes or hazardous liquids. They are a basic sanitation feature. For bins in food courts or near restaurants, you might find more specialized designs with sealed compartments for liquid waste. The best practice is always to empty drinks into a proper sink before disposing of the container. So, while drainage is a common feature for basic maintenance, the system relies heavily on public cooperation and regular cleaning by municipal services to function effectively and hygienically.