Skip to main navigation Skip to content Skip to footer

Does Chlorine Bleach Kill Algae?

Will chlorine kill algae? Find out if bleach kills and gets rid of algae and moss and what the bleach to water ratio is to remove green algae from walls.

More from Clorox experts
Get more for less with bundles

Tackle household messes with 10% off curated cleaning bundles or build your own.

Get more for less

Save 10% on curated cleaning bundles or build your own.

Question

I have algae growing on an exterior surface of my home and was wondering if I can remove it using a combination of Tide® Laundry Detergent and bleach.

Answer

Unfortunately, we have never studied the combination of Tide® Laundry Detergent and Clorox® Regular Bleach2 as an effective and safe way to remove algae from exterior surfaces. I would recommend that you contact the manufacturers of Tide® Laundry Detergent to determine whether it is safe for outside use as runoff could negatively interact with plants and animals. In regards to Clorox® Regular Bleach2, it is an EPA-registered disinfectant and is an approved and safe product to help eliminate moss, mold and mildew from outdoor siding, tile, brick, stucco and patio stone. Below is information on how to use Clorox® Regular Bleach2 to remove patio moss, mildew stains and exterior mold:

How To Clean a House Exterior