That's a super common and frustrating problem! Rusty hinges can make taking out the trash a real battle. The good news is, preventing it is pretty straightforward with some simple maintenance. Here are the most effective ways to keep those hinges swinging smoothly.
First, start with a good cleaning. Use a stiff brush and soapy water to scrub away dirt, grime, and any early rust spots. For tougher rust, a paste of baking soda and water or a dedicated rust remover can help. Rinse thoroughly and let the hinges dry completely before moving to the next step—this is crucial.
Lubrication is your best friend. Apply a protective lubricant to the hinge pins and moving parts. A silicone-based spray or a dry lubricant like graphite powder are excellent choices as they don't attract dirt. A classic like WD-40 works too; just remember it's more of a water displacer and short-term protectant, so you may need to reapply it more often.
For a more permanent solution, consider upgrading the hardware. If possible, replace standard steel hinges or pins with stainless steel or galvanized versions. They are naturally much more resistant to rust. You can also use plastic or nylon washers as a barrier between metal parts.
Finally, make this a routine. A quick spray of lubricant every few months, especially before rainy or snowy seasons, will save you a huge headache. If your can has a lid damper, check and lubricate that mechanism too. A little preventative care keeps everything working as it should.