All Slurry items are handcrafted and will vary in character and markings.
Slurry items are fully sealed. The sealer must allow the concrete to breathe so whilst it is stain and water resistant, it is neither stain nor water proof; your concrete will remain porous to a degree. Clean water marks will eventually dry out but if the water carries any dirt or other substances with it, a mark may become permanent.
If you wish your item to remain pristine we recommend you use it with care. Wipe with a damp microfibre cloth and do not clean with chemicals.
Concrete will wear over time depending on use. This developed patina is to be expected and is part of concrete's unique character.