Yes, there is some special care and maintenance that will be required of the logs you have inside of certain gas fireplaces. Depending on the exact brand and even the model of fireplace you purchase, it is going to need to be regularly cleaned and inspected. Wires will need to be checked for safety. And the most important part that needs to be checked might be the gas valves themselves. Some of these inspections and this maintenance can be done by you. However, some may need professional servicing once or twice a year. You need to see the recommendations and guides of your specific model.