It's time to replace the pod in Night Crawler - RAZ TN9000 when you notice a decrease in flavor quality or vapor production or if you experience any leaking or gurgling sounds during vaping. While the lifespan of pods can vary depending on usage habits and e-liquid viscosity, a general guideline is to replace the pod every 1-2 weeks or after consuming approximately 12mL of e-liquid. Regularly inspecting your pod and monitoring its performance can ensure an optimal vaping experience with Night Crawler - RAZ TN9000.