How can I effectively remove bike grease stains from clothing?

To effectively remove bike grease stains from clothing, start by blotting the stain with a clean cloth to absorb excess grease. Then, apply a pre-treatment stain remover or liquid laundry detergent directly to the stain and let it sit for a few minutes. Wash the clothing in the hottest water safe for the fabric, and check the stain before drying. Repeat the process if necessary before drying the clothing.