“Treated an Indian sandstone patio that were coated with algae using a pump spray.
Two to three days later, patio was and still is looking as it did when first laid.”
“It is an easy to apply very effective concrete/paio cleaner. Shame the dilution has come down from 1+20 to 1+4 but still a really good choice. Pet safe when completely druy. Carries on cleaning for months after application. I think I made a mistake applying it when the temperature was only a few degrees above freezing when it didn't work as well as usual so re-applied when the temp. went up and now working fine. Would definitely recommend”
