That's an excellent and very practical question! Yes, most quality outdoor trash bins designed for waste sorting do come with some form of signage or labels. It's a critical feature for making recycling and composting easy for everyone at home.
Typically, you'll find durable, weather-resistant adhesive labels or engraved symbols on the lids or sides of the bins. Common labels include the universal recycling symbol (♻️), "Landfill," "Compost," or specific icons for paper, plastic, glass, and metal. Many sets use color-coding—like blue for recycling, green for compost, and black for landfill—paired with clear text.
If your bins didn't come with labels, or they've faded, it's a great idea to add your own. You can purchase waterproof labels or use a permanent marker. Clear signage drastically reduces contamination in recycling streams and helps ensure food scraps go to compost, making your household waste management much more effective and environmentally friendly.