Preventer - For all Stone Types - Controls and Prevents Reinfestation after Removal - Suitable for Terraces and Pathways - Removes Green and Red Algae - 2.5 L

Patio Black Spot Preventer - For all Stone Types - Controls and Prevents Reinfestation after Removal - Suitable for Terraces and Pathways - Removes Red and Green Stains From Algae - 2.5 L

Patio Black Spot Remover - for All Stone Type - Restore Natural Colour - Removes Staining Caused by Black Lichen, Green Algae and White Fungi - Biodegradable and Acid-Free - 4 L