For homeowners living in windy areas, it's quite easy to collect debris from passing storms and other causes. To protect line posts from collecting debris build-up, Deerbusters suggest using vinyl camp inserts.
Vinyl line caps are available for 1 5/8" and 1 3/8" line posts. They are simply added to the top of fence posts to protect the posts from collecting rain, dirt and other debris. For a more decorative look, there are decorative dome caps that can be added to line posts - also black in color to match the fence system.
Keeping debris and rain out of line posts can be done in seconds. (Fence kits come with vinyl caps for convenience to the installer, as a side tip.)