Covers need cleaning periodically.
Depending on the size of your cover you can lay it on a clean flat surface and scrub gently with a soft deck brush and soap and water.
https://www.sailrite.com/How-to-Clean-Sunbrella-Fabric

Depending on the size of your cover you can lay it on a clean flat surface and scrub gently with a soft deck brush and soap and water.
https://www.sailrite.com/How-to-Clean-Sunbrella-Fabric
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