HOW TO CLEAN YOUR PORCH STEPS?

Try something like 30 Seconds outdoor cleaner. It's made for algae and mildew. You can spray on and hose it off to rinse. It won't harm grass

Use 4 scoops Oxiclean to 1 gallon of hot as you stand water- or use a deck brush. I swabbed with rag mop, let it sit for at least 20 min, brushed with deck brush to scrub up stains and hose rinse. Thank you Hometalk

Power washing works well to remove mold on outdoor surfaces.

Outdoor clorox is great. Spray on then wash off in fifteen. Works beautifully on siding

I have used Scotts Outdoor Cleaner plus Oxi Clean stain fighter already in the mix it has worked great for me on concrete patio, vinyl fence and more & it is Safe on lawns,plants,fabric,patio furniture & more Works great on Cement/Stone,Wood,Vinyl,Brick and many more outdoor surfaces.

I used 80/20 bleach & water with a stiff brush. Then I started spraying with wet & forget outdoor. It's a no scrub cleaner that slowly works to remove the "black & green". I just couldn't stand to wait initially. However, it will work over time.