That's a common and frustrating problem! A rotting bottom turns a trash can into a mess. The good news is, preventing it is straightforward with a few key habits.
First, clean it regularly. Don't just empty the bag. Hose out the can monthly with a disinfectant or a vinegar-water solution. Let it dry completely upside down before putting a new bag in. Moisture is the enemy.
Second, create a waterproof barrier. After cleaning and drying, consider spraying the inside bottom with a waterproof sealant (for metal cans, use a rust-inhibiting spray). For plastic cans, a simple plastic drop cloth or a dedicated, heavy-duty trash can liner as a first layer can catch leaks before they reach the can itself.
Third, keep it elevated. Never let the can sit flat on wet ground or concrete. Use a simple plastic or wooden pallet, or purchase a stand with airflow slats. This allows air circulation and prevents rainwater or condensation from being trapped underneath, which accelerates rot and rust.
Finally, be mindful of placement. If possible, store your cans in a shaded, covered area like a carport or under an eave. This reduces sun damage (which weakens plastic) and limits direct rainfall into the can.
By combining regular cleaning, a moisture barrier, proper elevation, and smart placement, you'll add years to your trash can's life. It’s a small amount of effort for a big payoff in cleanliness and not having to buy a new can every couple of years.