Because of the naturally occurring colour of kelp, fish and humate, Seasol or PowerFeed can stain just like beetroot and red wine. If you do spill Seasol or PowerFeed on concrete or pavers you should rinse it off ASAP to avoid staining. If you have an existing stain, try applying a product called ’30 Seconds’. It is a Sodium Hypochlorite based cleaner. Other customers have had great success removing Seasol or PowerFeed stains on pavers and concrete with this product. Remember to test this product on a small patch to ensure it doesn’t damage the pavers.