That's a common and frustrating issue for property managers and municipalities. A very tall outdoor trash can is indeed a smart physical deterrent. Here are some practical ideas based on that concept.
First, consider specifically designed "anti-dumping" or "heavy-duty" commercial bins. These are often around 6 to 8 feet tall with narrow openings, making it physically awkward to shove in a large bag of construction debris or an old chair. Their height and sturdy construction signal they are for everyday litter, not bulk waste.
Look for models with a locking lid that requires a key or a special tool to open. This is common for bins in public parks or apartment complexes. While staff can open them easily for collection, it prevents casual, after-hours dumping of large objects. Pair the bin with clear, multi-lingual signage stating its purpose—"For Daily Litter Only" or "No Large Items, Furniture, or Construction Debris"—and list fines or contact information for proper bulk disposal services.
Placement is key. Install the tall bin in a well-lit, high-traffic area. The visibility acts as a psychological barrier. For a problematic corner, you might use a cluster of two or three tall bins, bolted together or to a concrete pad, to eliminate the gaps where people might leave items beside a single can.
Ultimately, the tall bin is part of a strategy. It must be paired with clear communication about legal disposal options. By making improper dumping inconvenient and providing a visible, dedicated solution for small waste, you significantly reduce the incentive to leave large items behind.