Felt tip pen ink removal

[briam]

How do I remove felt tip pen writing from a lump of cast concrete (a garden seat). The wretched supplier has written the price on with a felt tip pen!

[kevplumb]

welders anti spatter spray

[dave.m]

Follow these steps to remove ink stains from Bluestone, Brick, Concrete Flagstone, ­Granite, Limestone, Masonry Tile, Sandstone, Slate, Terrazzo:

* Wash stain with a solution of washing soda or detergent (never soap) and water.
* Use a cloth or soft-bristled brush to help scrub.
* Rinse thoroughly with clear water and allow to dry.

[foxhole]

Acetone or cellulose thinner will remove.