Does Bleach Get Rid of Algae

Some homeowners also try to get rid of algae by using bleach. Bleach is a caustic chemical that can kill your lawn and plants. … It penetrates black algae’s defenses and removes the green algae that can grow on the shaded areas of your roof.

Can you clean algae with bleach?

Mix one part household bleach with two parts water in a bucket. … Wait 12 to 15 minutes for the bleach to break apart the algae. Scrub it thoroughly with a stiff nylon-bristle brush to remove. Rinse the surface free of the bleach and algae with a garden hose.

What kills algae better bleach or vinegar?

Bleach, however, should not be your first option, especially if the area you plan to rid of algae is near plants or grass. … Vinegar can also be used to rid of algae. Use a mixture of water and white vinegar to spray down the area and kill the algae. Rinse the surface alga off the concrete with a water hose.