That's an excellent question about urban waste management! The answer is actually both - it really depends on the specific trash bins and their locations.
Many municipal trash cans do use standard-sized liners, particularly in parks, sidewalks, and public spaces where consistency matters. These standard sizes help maintenance crews efficiently service multiple locations without carrying numerous different liner types. Common standard sizes include 30-gallon, 32-gallon, and 55-gallon bags that fit most conventional public trash receptacles.
However, custom liners are quite common too, especially for uniquely shaped or branded bins in commercial districts, tourist areas, or specialized facilities. Many cities opt for custom-fitted liners to ensure perfect coverage and prevent bags from slipping into containers. Custom sizing also helps with oddly shaped openings or bins with specific compartment designs.
The choice between standard and custom often comes down to several factors: the bin's dimensions, the municipality's budget, maintenance efficiency needs, and durability requirements. Many public works departments measure their bins carefully before deciding whether off-the-shelf liners will work or if custom options are necessary for optimal performance and cost-effectiveness.
When selecting liners, cities also consider material thickness, environmental factors like weather resistance, and whether they need special features like drawstrings or anti-microbial properties. So while you'll find plenty of standard liners in use, don't be surprised to encounter custom-fitted options in your city's public spaces too!