Cleaning out a culvert is an important task that should be done on a regular basis. This will help to keep your property clean and free of dirt, debris, and other pollutants. To clean out a culvert, you will need to first remove all of the debris. Next, you will need to use a plunger to push all of the dirt and debris out of the way. Finally, you will need to use a vacuum cleaner to clean the inside of the culvert.