How do you kill or eliminate mold in flagstones ?

  7 answers
  • Pmono7690 Pmono7690 on Feb 10, 2018
    Look in your hardware store for 30 Second Cleaner. Yes, that is the name. I used it on our deck, concrete walkway and siding and it works like a charm. No mold all summer and 1/2 way through winter and no sign of mold out there! Woo Hee!
  • Rosie Rosie on Feb 10, 2018
    I spray flagstones with straight hydrogen peroxide on a hot day. If the mold is still thick, I spray a cheap bathroom mold eliminator. I usually spray in the spring and in the fall. Keep in mind, it might keep plantlings from starting, but I do not mind. I do keep our pets in until the spray is dry.
  • P poupon P poupon on Feb 10, 2018
    Buy vinegar and sray, let sit, scrub lightly with stiff push broom. They sell a stronger grade in Farm n Fleet or Tractor Supply Stores. Peroxide too kills mold on porus material.
  • We use vinegar. We have them on our front walkway.
  • Kim Kim on Feb 10, 2018
    If you want a chemical free way, use a 50/50 mix of vinegar with water. Spray it on, let it sit, hose it off.
  • Janet Pizaro Janet Pizaro on Feb 10, 2018
    Use Wet and Forget safe for all surfaces

  • BPGiTo BPGiTo on Feb 10, 2018
    Thanks all of you for your answers. They will help me a lot to eradicate it. I was afraid to ruin them with the wrong product and also affect my Yorkie dog.