Dear Allie: Eco-Friendly Mold Killer

Posted on November 8, 2007 by Allie


In comments, Nicole asked:

What about a good and green way to prevent mold from growing in a sad little bathroom without any fans and a very, very tiny window? Or a green way to clean the existing mold from walls, shower curtain liner, tub, toilet, etc? It’s driving me crazy!!

Thanks for your question, Nicole!

Sorry it took so long for me to get back to you on this. I was letting a little mold grow in my bathroom so I could test this out for you (or I was using your question as an excuse not to clean the bathroom, depending on how you choose to look at it).

I thought I’d try a few things to get the mold to go away, but the first worked so well, I didn’t get any further.

We had some mold on the floor of our shower. I sprinkled baking soda liberally, sprayed undiluted white vinegar on it and let it sit for a few minutes. When I went back to it, I scrubbed with a scrub brush until it was gone. It was very effective. Since then, I’ve been spraying the shower down with diluted vinegar (about half water, half vinegar) after every use. So far, no return mold.  And I know I’ve complained about the smell of vinegar in the past, but I’m getting used to it.  And if you spray in the morning, the smell should be gone by the time you get home in the evening.

If you have mold on painted walls, I would recommend using diluted white vinegar and an old sock turned inside out to gently remove it. Test in an inconspicuous area first, of course. And anytime you’re dealing with mold, make sure to open a window, and consider using a face mask if you have allergies or asthma.

Tea Tree Oil mixed in water is also a good mold removal solution.

Of course, the best way to deal with mold is to prevent it from growing in the first place. If possible, shower with the bathroom door open, and leave the shower curtain or door open after you shower to let moist air escape. When the weather permits, open the window too.

A dehumidfier is a must. I know you said the bathroom is very small, but consider running the dehumidifier in the doorway or hall during the day while you’re not home. Look for an EnergyStar model, and shop around. You should be able to find one for a reasonable price.

Hope this is helpful!


  1. Thanks so much! I’ve since moved into a new house and it has much better ventilation. I hope that the mold-days are behind me…Hopefully this will help someone else in my old situation and I will certainly pass along the info should it come up with anyone I know!

    November 9th, 2007 at 5:57 pm
    Comment by nicole
  2. Congrats on your new digs, Nicole!

    November 11th, 2007 at 7:43 pm
    Comment by Allie
  3. allie,

    thanks for visiting our blog…i was just looking over some old posts of yours and i saw this one. an easy way to reduce mold in the shower is to use a squeegee on the walls and the bottom of the tub as soon as you are finished showering. it doesn’t get rid of mold entirely but it takes longer for it to build up since you’re removing the water from the surfaces. ikea sells squeegees for $0.99 or you can get them at a hardware or housewares store.

    March 15th, 2008 at 2:10 am
    Comment by maria
  4. Thanks, Maria! That’s a great tip! Simple and chemical free.

    March 15th, 2008 at 2:43 am
    Comment by Allie

Leave a comment

Tip of the Day

If It Doesn’t Smell, Don’t Wash It


According to Real Simple, if every American made an effort to launder less — cutting out just one load of laundry a week per household — we’d save enough water to fill seven million swimming pools each year.

So if it looks clean, and it smells clean, call it clean and wear it again. Consider hanging worn clothes out on your clothesline to freshen them up between wearings.

  • Stay-ad

    Support This Site