When a banner stops performing well, you’ll notice it through lower click-through rates and fewer conversions. If your impressions are still high but people stop clicking, that’s a strong sign the banner is no longer catching attention. You might also see that the cost per click goes up while the results drop. These are clear hints that people have seen the same design too often. At that point, it’s smart to refresh the banner with a new image, different colors, or a slightly changed message. Keeping your creatives fresh helps bring better results and keeps your audience more engaged. What are some signs you watch for when it’s time to switch things up?