That's a great question! Yes, many modern urban trash cans are specifically designed to handle rainwater. A common feature you'll find is a series of small drainage holes at the very bottom of the bin's inner liner or bucket. These holes allow any water that gets inside—from rain or liquid waste—to slowly drain out, preventing the bin from becoming a stagnant, smelly pool. This helps control odors and stops the bin from getting excessively heavy.
Some higher-end models take it further. They might have sloped or rounded inner bases that direct water toward those drainage points. The materials themselves also play a big role. Durable, non-corrosive plastics and coated metals are used to ensure these drainage features don't rust or clog over time. In areas with very heavy rainfall, you might even see designs with covered tops or specially angled lids that minimize how much water can enter in the first place.
So, while not every single public bin is perfect, urban planners and manufacturers are definitely thinking about this. The goal is to keep public spaces cleaner, reduce maintenance issues, and avoid creating mosquito breeding sites. Next time you pass one, take a quick glance at the bottom—you might just spot those little drainage holes doing their job!