The sandstone setts around the edge of our patio have dark stains where the grass had grown over the edges for a few months.
I have tried bleach in some places which did help a little but stains still visible.
Can anyone suggest what I should use to remove the stains if this is possible?
I have tried bleach in some places which did help a little but stains still visible.
Can anyone suggest what I should use to remove the stains if this is possible?