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Step 4 · Scrub the steps

Allow the cleaning solution to sit on the steps for the recommended time (usually 10-15 minutes, or as per product instructions) to allow it to penetrate and break down the mildew and algae. Then, use a stiff-bristled brush or a scrub brush to vigorously scrub all affected areas. Pay special attention to grout lines, crevices, and heavily stained spots.

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Step 4 · Scrub the steps

Allow the cleaning solution to sit on the steps for the recommended time (usually 10-15 minutes, or as per product instructions) to allow it to penetrate and break down the mildew and algae. Then, use a stiff-bristled brush or a scrub brush to vigorously scrub all affected areas. Pay special attention to grout lines, crevices, and heavily stained spots.

Videos for this step

Rinse and Scrub Treated AreasScrub the Deck SurfaceFirst Soak and Manual Scrub

Tools and Materials

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How to Clean Mildew and Algae Off Outdoor Steps

Step 4 of 7·2.5 hr left

Sweep loose debris
5 minutes1 items
Rinse the steps
5 minutes1 items
Apply cleaning solution
10 minutes1 items
4
Scrub the steps
15 minutes1 items
5
Rinse thoroughly
5 minutes1 items
6
Inspect and repeat if necessary
10 minutes
7
Allow to dry
120 minutes
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