Short answer: yes, you should expect the possibility of some rust after several winters of salt exposure, even on a trash can marketed as rust-resistant. That does not necessarily mean the factory lied. In industry, rust-resistant usually means the material or coating is designed to slow corrosion, not eliminate it forever. Rust-proof is a much stronger claim, and true rust-proof outdoor metal is rare or expensive. Salt makes the difference. Road salt, brine, and coastal salt spray leave chloride on the metal. Chloride attacks protective coatings and accelerates corrosion once it reaches bare steel. It also holds moisture and creates repeated wet-dry cycles. Add scratches from curbs, plows, and collection trucks, plus freeze-thaw movement and UV aging, and the weakest points are usually the bottom rim, welded seams, hinges, scratches, and paint chips. If salt sits in crevices or under the bin, rust can start there even if the sides still look good. What you should expect depends on construction. A powder-coated mild steel bin may show rust at chips and edges after a few salty winters. Galvanized steel with a good powder coat is more resistant, but cut edges and scratches can still corrode. Stainless steel performs better, though not all stainless is equal; 304 is common, while 316 is more salt-tolerant. Plastic bins do not rust, but their metal axle, screws, and hinges might. If your factory cannot provide the substrate, coating thickness, salt-spray test hours, and warranty terms, treat the claim as maintenance-required rather than permanent protection. To reduce rust, rinse the bin with fresh water periodically, especially after salty roads, and dry it. Touch up scratches with compatible paint before rust spreads. Keep the lid closed, avoid standing water, and raise the bin off wet ground if possible. Inspect the bottom and seams, because that is where failure often begins. So should you still expect some rust? After a few winters with salt exposure, some surface rust is a realistic possibility unless you bought high-grade stainless or a fully protected plastic bin and maintained it. With a normal rust-resistant metal can, plan for inspection and touch-ups; with neglect, expect rust at the first coating breach. Ask the factory what exactly rust-resistant means before you rely on it.