That's a great question! A rusted-out bottom is the most common reason steel trash cans end up in the landfill themselves. Luckily, preventing it is straightforward with some regular care. The main enemy is moisture trapped inside, which mixes with residues and sits against the metal. Here’s a practical guide.
First, clean it regularly. Don't just empty the bag; hose out the interior every few weeks. Use a mild detergent and a brush to scrub away sticky liquids and debris that trap moisture. A clean, dry surface is your first defense.
Second, ensure proper drainage. Most steel cans have small drainage holes in the bottom. Check that these are never clogged. You can even carefully drill a few more small holes (1/4 inch) to allow water to escape freely.
Third, create a physical barrier. After the can is completely dry, consider these options:
* Apply a waterproof sealant or rubberized coating (like truck bed liner spray) to the bottom interior. This creates a flexible, protective layer.
* Place a lightweight, elevated plastic grate or a custom-cut rubber mat at the bottom. This keeps trash bags off the metal surface, allowing air circulation.
Fourth, mind the exterior bottom. Elevate the can slightly off wet pavement or grass using bricks or specially made can risers. This improves airflow and prevents ground moisture from being in constant contact.
For a new can, choose galvanized steel if possible—it has a zinc coating that sacrificially protects the iron from rust. For any can, a yearly check for chips in the paint (the exterior coating) is wise. Touch up any bare spots with rust-inhibitive spray paint.
In short, the mantra is "Keep it Clean, Keep it Dry, and Keep it Off the Wet Ground." A few minutes of maintenance every season can extend your trash can's life for years.