by Titch » 10 Jun 2012, 09:05
If it's on concrete or pavers ,Mix plaster of Paris and water until it’s as thick as peanut butter. For every cup of mixture you make add one teaspoon of dishwashing liquid. put half an inch of mixture over the stain. Leave it to dry, chip away and sweep the plaster and stain away.
Hope this helps.
Cheers.
Titch