That's a great question and a common headache for many communities! Keeping birds and squirrels out of public bins is all about making the bin less appealing or accessible than the surrounding environment. Here are some practical, humane methods that work well:
First, consider the bin design itself. Lids are crucial. Weighted lids or those that close automatically are excellent. For birds, specially designed lids with narrow, angled openings prevent them from reaching inside. For persistent squirrels, bins with locking mechanisms or pedal-operated lids they can't easily pry open are very effective.
Physical deterrents can also help. Installing bird spikes on the rim or handle areas (where they perch) discourages landing. For squirrels, a smooth, metal collar or pole guard around the supporting post can prevent them from climbing up to the bin.
Location and maintenance are key. Place bins away from overhanging branches or fences that provide easy access. Most importantly, ensure regular and frequent waste collection. Overflowing bins are an open invitation. A consistent cleaning schedule around the bin removes food residue and reduces the attraction.
Finally, community awareness helps. Clear signage encouraging proper waste disposal, with the lid closed, makes a difference. While no solution is 100% perfect, combining a well-chosen bin design with diligent maintenance is the most sustainable way to manage this issue and keep our public spaces cleaner.