Assuming you are referring to a truck bed cover, also known as a tonneau cover, there are a few things you can do to keep the dust off.
First, you can clean it regularly. This will help to remove any dust that has already accumulated. You can use a soft cloth or brush to avoid scratching the cover.
Second, you can treat the cover with a protectant. There are many products on the market that will help to repel dust and keep your cover looking clean.
Third, you can keep your truck clean. This may seem like common sense, but it’s important. If your truck is full of dirt and dust, it will be more likely to transfer to the cover. So, make sure to clean your truck bed and keep it free of debris.
By following these simple tips, you can help to keep your truck bed cover clean and dust-free.