That's a common and frustrating problem! A pool of nasty liquid at the bottom of the bin is a source of bad odors, stains, and attracts pests. Luckily, preventing it is easier than you might think. Here are some practical solutions you can try.
First, let's tackle the issue at the source. Always bag your trash, especially kitchen waste. Double-bagging particularly wet or messy items adds an extra layer of protection. For liquids like leftover drinks or cleaning water, never pour them directly into the trash can. Dispose of them down the sink or toilet instead.
Improving drainage is the most direct fix. If your plastic trash can doesn't have them, you can carefully drill several small holes (about 1/4 inch) in the bottom and along the lower sides. This allows any liquid that does get in to drain out naturally. Just place your can on a slightly sloped surface or over a gravel patch so the water can escape and not create a new puddle underneath.
Using absorbent materials is a great proactive step. Before you put in a new bag, sprinkle a layer of an absorbent substance at the bottom. Cat litter, shredded newspaper, or even a handful of baking soda are excellent choices. They will soak up minor leaks and help neutralize odors.
Where you place your trash can matters. Keep it under a covered area like a porch, eave, or a dedicated trash can shelter to minimize rainwater collection. Also, consider using a raised platform or stand with slats. Elevating the bin improves air circulation underneath and aids drainage from any holes you've drilled.
Finally, regular cleaning is non-negotiable. Empty and rinse out your trash can monthly with a hose and a disinfectant or a vinegar solution. Let it dry completely in the sun before putting a new bag in. This breaks the cycle of grime and residue that holds moisture.
By combining these strategies—bagging properly, creating drainage, using absorbents, smart placement, and regular cleaning—you can effectively defeat the dreaded bottom sludge and maintain a much fresher outdoor space.