I hope you'll be able to help me with my problem.
I have granite tiles on my balcony and they got stained
We were having parquet put in one of the rooms and the builders cut some floor-boards on that balcony. Naturally, there was wood dust, which unfortunately we forgot to clean for some time... there was rain, it must have got wet and there you go - the juices from that wood dust have permeated the tiles
If you could tell me some way of cleaning this, I would be forever grateful

