Rinse a colander or fine-mesh strainer promptly, wash it with dish soap and a soft brush, and rinse from both sides until the holes are clear. Let it dry fully before putting it away. For dried food, soften the residue in warm soapy water if the care instructions allow soaking; pressing harder against delicate mesh can damage it.
A colander usually has larger punched holes. A fine-mesh strainer has a woven screen that can catch small seeds, starch, and pulp. Both need attention around their rims and handles, but a mesh screen benefits from lighter pressure.
Check the material before choosing a cleaning method
Read the maker’s care instructions, including any limits for the handle, coating, or collapsible parts. Dishwasher suitability belongs to the complete product, not simply its metal bowl. A wooden handle or a bonded joint can change how the tool should be washed.
For example, OXO labels its 8-inch stainless steel strainer and its 3.5-quart collapsible colander dishwasher-safe. Those examples do not establish that every strainer or silicone colander can go in the dishwasher.
Loosen the food without stretching the mesh
Empty scraps into the trash or compost where suitable. Avoid pushing a wad of rice, vegetable peel, or tea leaves into the sink drain. Rinse the tool while the remaining food is still soft, using water pressure rather than your fingertips to clear small openings.
For mesh, hold the strainer with the outside of the bowl toward the running water so the flow pushes residue back toward the side where it collected. Turn it and rinse the inside too. Support the rim instead of pushing the center of the screen against the sink.
If food has dried on, place the washable bowl in warm water with dish soap, keeping any parts that cannot be soaked above the water. Let the food soften until a soft nylon brush can lift it. There is no useful universal soaking time: check the residue and repeat gentle brushing as needed.
Brush both faces of the screen with short, light strokes. Work around the rolled rim, the handle connection, and any feet or supporting ring. These areas can retain food even when the open center looks clean. Open a collapsible colander fully to reach the folds.
Do not use a knife point, fork tine, or stiff wire brush to pick out particles. A small hole made by a sharp tool can turn into torn mesh. Avoid pounding the rim against the counter to dislodge food.
Rinse and inspect before drying
Rinse away the soap, then hold the empty tool toward a light. Look across the mesh from different angles for remaining bits. Water should drain through the openings freely, without a visible patch of stuck food. Check the underside of the rim as well as the bowl.
If you use a dishwasher, remove trapped food first and position the tool according to its instructions so spray can reach the bowl. Keep delicate mesh from being crushed by heavier cookware. Inspect it after the cycle rather than assuming a machine has cleared every opening.
Air-dry with water able to drain away. A crowded or dirty rack can leave the rim sitting in moisture; clean the dish-drying rack and drain tray when buildup develops. Store a collapsible colander only after its folds are dry.
When cleaning is no longer enough
Replace a strainer with torn mesh, protruding wire, a loose rim, or damage that prevents thorough cleaning. A warped colander that will not stand securely also needs attention. Discoloration alone is different from a structural defect, but persistent residue or odor after washing means the tool needs another inspection before it returns to food preparation.
Keep a soft dish brush available near the sink and rinse the tool as soon as it is empty. That small change usually makes the next wash easier than leaving starch or pulp to dry in place.
