Outdoor trash cans often develop a stubborn waxy residue due to accumulated grease, food waste, and weather exposure. To prevent this, start by lining the bin with a durable trash bag to minimize direct contact with waste. Regularly rinse the can with a mixture of hot water and dish soap, scrubbing the interior with a stiff brush to remove sticky residues. For tougher buildup, use a solution of vinegar and baking soda, which breaks down grease naturally. Avoid placing hot or oily items directly into the trash, as these contribute to wax-like layers. Finally, store the bin in a shaded area to reduce heat-induced melting of waste materials. Consistent cleaning and mindful disposal habits will keep your trash cans residue-free.