That's a common and frustrating problem! The grit and debris under the bin, combined with daily movement, can really mar your beautiful tiles. Don't worry, here are some natural and effective solutions.
The easiest fix is to create a protective barrier. Place a durable, non-slip outdoor mat underneath the trash can. Look for a utility mat designed for heavy items—rubber or coir mats work great. They catch debris and provide a smooth surface for the can to slide on without grinding dirt into your tiles.
For the feet or base of the can itself, consider adding soft pads. Self-adhesive furniture felt pads are a fantastic, inexpensive option. Stick them to the bottom rim of the trash can. They create a tiny gap and a smooth gliding surface. For a heavier can, try small rubber bumper pads instead.
If you move the can often, a mobile base might be your best bet. A large, sturdy plant caddy or a wheeled trash can dolly lifts the bin completely, allowing you to roll it effortlessly without any scraping.
Finally, a simple habit change can help: regularly sweep the area where the can sits. Removing sand and grit before you reposition the bin eliminates the main abrasive agent causing the scratches.
Start with a good mat and some felt pads—it's an affordable combo that makes a huge difference. Your patio tiles will thank you!