Asked on Oct 15, 2018

How to get rid of green algae stuff growing on my gravel driveway?

Pat Avery
by Pat Avery

How to get rid of green algae looking stuff growing on my gravel driveway

  7 answers
  • GrandmasHouseDIY GrandmasHouseDIY on Oct 15, 2018

    Hi Pat you could try bleach and water and a power sprayer.

  • Pat Avery Pat Avery on Oct 15, 2018

    Thanks I will give it a try

  • I always opt for a natural solution. Vinegar and water in a pump sprayer will work wonders. Vinegar is cheap, $2 gallon, mix it 50 50 and reapply after rain.

  • Kathy Gunter Law Kathy Gunter Law on Oct 15, 2018

    Wet & Forget Outdoor is a good no scrub product that removes & replaces the "green & black". Check out their video on qvc. Also available at Lowe's &

  • Kauai Breeze Kauai Breeze on Oct 16, 2018

    You may need to correct drainage issues.

  • Sissy Sissy on Oct 16, 2018

    bleach and water and dawn dish detergent and a pump sprayer .Wet the driveway first and then spray it and leave it sit for a half hour and then hose it off .Try to do it on a cloudy day and it also works on vinyl siding and metal gutters to get off dirt

    • Pat Avery Pat Avery on Oct 16, 2018

      What is the mixture of bleach to water? Does this work better in warm temps? Thanks for the info.

  • Sissy Sissy on Oct 16, 2018

    I use 1 1/2 cups bleach(if it is the cheap stuff ) Clorox is better and only needs 1 cup most times ) to a 2 gallon pump sprayer and a half cup of dawn or 1 of the tiny bottles they sell at the dollar stores .I never use a pressure washer as it can damage things if you do not know what you are doing .Bonus I do it when it is going to rain and wait until it starts to sprinkle lightly or I am sure it is going to rain .I even do it after a rain storm as everything is nice and wet at it cleans even better when the item is already wet .You can judge by the look if you need to add more bleach the next time you do it .Just be careful of metal things and painted storm doors or exterior lights it can take paint of or discolor them