Yes , it is normal for gas logs accumulate a small amount of soot over time. There are a couple ways to clean them: 1- Use approved gas log cleaner and a small bristle brush. If you use this method you will only use the brush when the logs are completely cool to avoid injury. To use the spray cleaner you will heat the logs according to the directions and spray once you have turned off the fire. 2- For other particles that may have accumulated you can used canned air to clean the logs while they are cool and the fire is not on. 3- We offer cleaning services and plans.