No matter how nice your blinds look when they're new, if you want to keep them looking their best, it will take a little care and maintenance over time. With that said, the best way to clean and care for your blinds will be different depending on the specific style of blinds.
For mesh café blinds: use a mild detergent, warm water, and a soft cloth or sponge to wipe away dirt and stains. For slightly tougher dirt or grime you could use a gentle brush to scrub the area. Rinse thoroughly and let them air dry before retracting or rolling them back up.
For PVC plastic café blinds: Prepare a mix of warm water and mild detergent. Gently scrub the blinds using a soft brush or cloth. Be careful not to scratch the PVC with course brushes or other cleaning equipment. Rinse the café blinds thoroughly with water and allow them to air dry before retracting or rolling up.