That's an excellent question, and as someone who also lives in a place with a lot of precipitation, it's a crucial one for maintaining a clean and odor-free outdoor space. The short answer is: it depends entirely on the bin. Many modern outdoor trash and recycling bins are designed with drainage in mind.
You'll often find small drainage holes, sometimes called weep holes, near the bottom of the bin. Their primary purpose is to allow any rainwater that gets inside—whether from a driving storm or simply from condensation—to escape. Without these holes, your bin can quickly turn into a stagnant water feature, leading to several problems. Standing water at the bottom of your trash can significantly increase its weight, make it harder to move, and accelerate the growth of bacteria, mold, and mildew. This not only creates powerful, unpleasant odors but also attracts pests like mosquitoes, flies, and rodents.
However, not all bins have adequate drainage. If you're purchasing a new one, look specifically for models that advertise this feature. The holes should be small enough to keep critters out but sufficient to let water drain. For bins you already own that lack drainage, you can carefully drill a few small holes yourself to solve the issue. Remember, a bin with a tight-fitting, waterproof lid is just as important as drainage holes. A good lid is your first line of defense, minimizing the amount of water that gets in during a downpour. So, while many bins are equipped for wet weather, it's always wise to double-check this feature to keep your outdoor waste management system efficient and hygienic.