Hey Fan,
I generally try to wipe off my rig with a clean cloth to get rid of any excess moisture and dirt. Other than that, your line shouldn't really hold too much water. Cheap mono line and expensive mono line are both still plastic.
Also, it's a good idea to go through your tackle box and keep things clean and dry as well. The little desi packs that come with some clothing products, etc, make good moisture absorbers in a box. There are also these new cardboard things that do the same thing.
I generally try to wipe off my rig with a clean cloth to get rid of any excess moisture and dirt. Other than that, your line shouldn't really hold too much water. Cheap mono line and expensive mono line are both still plastic.
Also, it's a good idea to go through your tackle box and keep things clean and dry as well. The little desi packs that come with some clothing products, etc, make good moisture absorbers in a box. There are also these new cardboard things that do the same thing.