How do I get rid of green coloring on my cement patio blocks?
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What can I do to my concrete patio that gets no sun and molds?
(Don’t mind the message😁 )Been thinking of options so it doesn’t need power washed every month
How do I get rid of alkali in my basement cement?
Two year ago I put in a sump right next to the mess but the mess keeps growing
Have you tried a bleach solution? Also, Lowe's sells a concrete cleaner that works well.
There is this product called Green Envy that would be worth looking into!
its mold, and you will probably need to deal with it from time to time. a less expensive way is outdoor bleach with water to cut it down will work. Do it at night after the sun goes down. Leave it sit overnight, then rinse in the morning.
Wet and Forget from Ace Hardware. Deborah is correct, its mold. This product works!
pressure wash it
vinegar, soap and water in a spray bottle - spray it on scrub with a wire brush and rinse.
Try a pressure washer