Hey there! That's actually a really common question for municipalities and business districts looking to manage public smoking areas. The most effective method I've seen involves using universal mounting brackets specifically designed for this purpose.
First, you'll want to select a sturdy, heat-resistant ashtray made of metal or heavy-duty plastic. Look for models that come with pre-drilled mounting holes on the bottom. The key is positioning it on the trash can where it's visible but won't interfere with the primary function.
For metal trash cans, you can typically drill directly through the ashtray's mounting holes into the trash can body. Use stainless steel bolts with locking washers to prevent loosening over time. If drilling isn't an option, heavy-duty industrial adhesive or epoxy can work, though it may not withstand extreme weather conditions as well.
Many modern solutions use clamp-on brackets that attach to the rim or side of existing trash receptacles without permanent modification. These are great because they're adjustable and can be moved between cans as needed.
Whatever method you choose, make sure the ashtray is positioned at a comfortable height - usually around waist level - and clearly marked with appropriate signage. Regular cleaning and maintenance are crucial to keep the area looking tidy and functional.
The goal is to provide a designated spot for cigarette disposal that's convenient enough that people will actually use it, helping keep your public spaces cleaner and reducing fire hazards.