That's a great question! A tipping trash can is a messy nuisance. The best method depends on your specific bin, location, and main concerns (wind, animals, etc.). Here are the most effective and natural-looking solutions.
For a quick fix, weighting the bin is simplest. Place a heavy paver, brick, or a bag of sand/gravel inside the bottom of the can liner. For a more permanent base, set the bin on a heavy concrete patio block or build a simple wooden frame filled with gravel.
If wind is the primary issue, strapping or bungee cording the can to a sturdy post, fence, or wall anchor is highly effective. Use durable straps with buckles or heavy-duty bungee cords with hooks. Loop them around the handle or under the lid's rim and secure them to your fixed point.
For ultimate security on soft ground, use a ground anchor system. You can purchase a purpose-made trash can anchor kit (often a screw-in earth anchor with a strap). A DIY version involves driving a long, sturdy stake or a piece of rebar into the ground next to the bin and using a strap or chain to tether them together.
For bins on patios or decks, a weighted base or bracket works well. You can place the bin inside a weighted decorative planter or attach a U-shaped metal bracket to your deck railing to hold the can snugly in place.
The key is choosing a method that matches your threat level. A weighted base often handles casual breezes, while determined raccoons or strong winds call for a solid tether to an anchored point. A combination of weight and a loose strap offers excellent all-around protection without making emptying the bin a chore.