Best way to clean stone walkway & stone retaining wall of mildew?

  8 answers
  • I would try to use a power washer. Some local home stores rent them out. Or if you have a local tool rental company. I don't know if the one you purchase for the end of your garden hose would be strong enough.

  • Rowgop (Pam) Rowgop (Pam) on Mar 23, 2018

  • Janet Pizaro Janet Pizaro on Mar 23, 2018

    use Wet and forget

    • JAGIII JAGIII on Mar 25, 2018


  • Amanda Amanda on Mar 23, 2018

    Hello. A pressure washer works great! Test a area first to get the feel of it and make sure it won't damage the wall. I have also used a garden and lawn sprayer. I mixed 50/50 water and bleach and sprayed it on. Let is sit for about 15 minutes and rinse. Good Luck!

  • Jamie Pan Jamie Pan on Mar 23, 2018

    A power asher

  • Mar25730150 Mar25730150 on Mar 24, 2018

    Vinegar, .99 a gallon, and a broom or brush. Caution, it will kill anything where it runs off! Grass, flowers etc. Very good for grass and weeds in cracks in sidewalks and driveways too. Much, much cheaper than round up etc. not much cheaper than bleach but no problem with caustic bleach fumes or bleaching out of colors. I also use it around fence posts, around And peramiter I want to keep weeds from invading. Good luck. P. S. Epsom salts are very good to kill moss in the lawn or garden plus contain magnesium which most soils are deplete of. My best lawn and garden hacks.

  • Christel Christel on Mar 25, 2018

    Pressure washer to get it off and then regular spraying of vinegar to keep it away.

  • Daniel D Brewer Daniel D Brewer on Mar 25, 2018

    pressure wash, spray first with a 50/50 solution of bleach and water. Wait a day then pressure wash.