Patio Black Spot Preventer will prevent 'Patio Black Spot' infestation on new terraces and pathways. When used annually, Patio Black Spot Preventer will also prevent re-infestation of 'Patio Black Spots' after they have been removed with our PATIO BLACK SPOT REMOVER. It specifically targets the Black Lichen spores, killing them before they can germinate, avoiding the use of harmful and impractical pesticides.
Patio Black Spot Preventer will also kill Green and Red Algae that grow on garden paths, patios and other decorative stonework.
TO USE - Prior to use, sweep the surface to remove any loose grime and dirt that may protect the Lichen from treatment by the Patio Black Spot Preventer.
For application to NEW unaffected stone, the first application should be used undiluted.
Fill a pneumatic garden type sprayer with Patio Black Spot Preventer and treat the WHOLE AREA.
1 - Use neat; fill a pneumatic garden sprayer with the product. Use at a rate NOT EXCEEDING 5 square metres per litre (2.5m x 2m).
2 - Apply a flood coat working in sweeping strokes across the stonework.
3 - A second pass should be made at right angles to the first to ensure complete coverage.
4 - Allow to cure - DO NOT WASH OFF.
5 - Green algae will disappear within days.
6 - FOR PREVENTION ONLY, and light coverings of green algae, using a pneumatic garden sprayer, add one part product to three parts water, mix well and apply using the above coverage rate. UPON DILUTION A 2.5 LITRE PACK WILL TREAT A 50 SQUARE METRE (5M X 10M) AREA.
Use annually for complete protection - where any green algae appears during the year, around down pipes and drains, treat locally. You do not need to retreat the whole area.
NB. DO NOT APPLY PATIO BLACK SPOT PREVENTER WHEN THE THREAT OF RAIN OR FROST IS IMMINENT