Hi,
Just wondering if anyone has any tips for removing these stains on my patio. They were caused from the plastic planter boxes I had sitting there. I have tried various things but the stains have not budged. I've tried 30 second cleaner from Bunnings, bicarb soda & vinegar, dish soap and hot water & scrubbed like mad, I also used a Karcher pressure cleaner in combination with these things. I'm wondering if something in the planter boxes actually leached out and caused some corrosion in the tiles so will not be able to be removed.
Anyway, if anyone has any ideas, I'd appreciate it - it's a rental property so I'd like to be able to remove them.
A few pics, the planter boxes that caused the staining and a picture of some of the stains.
Thanks

