could you please tell me what to use to make white
pestri,
Jul 4, 8:42pm
Try bleach, if that does not work try a mild acid like vinegar. suggest that you test these on a small area before going wholesale.
sanders4,
Jul 4, 8:52pm
Bleach should be best, vinegar is an acid and will attack the alkaline stone.
sonic6,
Jul 4, 11:37pm
thanks for that .
spiritofgonzo,
Jul 5, 11:55pm
30 seconds or wet and forget, and a quick rake.
cagivachick1,
Jul 6, 2:25am
they are porus so will absorb water and grow mould inside they need to be sealed somenhow to stop repeat offending
dibble35,
Nov 30, 3:08am
If its in a garden you may well kill any plants if you apply bleach or wet and forget.
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