How do I keep the red straws from getting lost?

The straws can be clipped onto the caps, there are grooves especially for that! However, we do have the WD-40® Smart Straw® which features a high-impact-resistant nozzle, 360-degree valve system and permanently attached straw, so WD-40® Multi-Use Product users will never lose the straw again®. Flipped down for a wide spray or flipped up for a pinpoint stream, the WD-40® Smart Straw® gives consumers a better way to spray! You will never lose the straw again!