markm Posted May 18, 2020 Report Share Posted May 18, 2020 Thin bleach in a 5 litre garden sprayer. Get it at bookers cash and carry dead cheap. Quote Link to comment Share on other sites More sharing options...
tignme Posted May 19, 2020 Report Share Posted May 19, 2020 Nial, google paving jointing compound. Its a brush in method. Most builders supplies stock it and you will need a pointing trowel. If you want a day at pigeons come harvest message me. Barry Quote Link to comment Share on other sites More sharing options...
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