Cleaning Interior Windows and Mirrors

If you tried out my method to clean exterior windows, I have great news for you. Cleaning interior windows and mirrors is simpler. Since interior glass is usually not as dirty, there is not the need to wash the windows first with the Sal Suds or Castile soap. Generally, interior glass is dirty with dust and water spots. So all you need is the club soda or vinegar spray, a squeegee, and a microfiber cloth.

The main exception to this advice is if you have mirrors or glass that hands often touch. In my house, this is primarily my children’s closet doors, which are mirrored. Handprints are grease. They need soap or detergent to remove. For these instances, I spray the handprints with the Lite version of the All Purpose Spray: 1/2 tsp. (2.5 mL) Sal Suds OR 1 Tbsp. (15 mL) Liquid Castile in a quart of water. Then wipe or squeegee off. Proceed with the club soda or vinegar spray and squeegee.

Last note: Do not clean the inside of windows when the sun is shining through them. They will be too warm. The sun will evaporate the spray before you have a chance to squeegee it away, and you will end up with streaks.


  • Glass cleaner: Pure, undiluted club soda in a spray bottle. (An alternative is a vinegar dilution of half vinegar/half water in a spray bottle.)
  • A good quality squeegee
  • A microfiber cloth
  • For handprints: Lite version of the Sal Suds or Castile Soap All-Purpose Spray and a separate microfiber cloth

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Lisa Bronner says:

Hi Siobhan- If the manufacturer’s recommendation is to use soapy water or a detergent spray, then the All-Purpose Spray with Sal Suds fits the bill. Add 1 Tbsp. Sal Suds to spray bottle with a quart of water. Spray, then wipe with a damp cloth.

Denise Lee says:

Will the club soda work after going flat?
I’ve been using vinegar for years and using club soda would be great for a change.

Lisa Bronner says:

Hi Denise- Yes, the carbonation is relevant, so it does have to be fresh. The bubbles in club soda last as long as your typical carbonated drink – maybe 3 or 4 days. This is why I normally just turn to the vinegar solution. However, if you keep small cans of it on hand, or are doing a large job, give the soda a try.

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the review search says:

Hi, Thanks so much Lisa, that’s super information. I think this is super helpful for cleaning window and mirror. I always di it by myself. After reading this article I feel you make my work easier than before. Keep up with good work.

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Nupur Rathod says:

Can we mix vinegar and alcohol in the Sal-suds Lite spray itself to avoid the 2 step process of first clean with sal-suds and then vinegar/water.

Lisa Bronner says:

Hi Nupur – The purpose of the alcohol or vinegar (and I recommend one or the either, not both together) is to pick up any streaks or water spots. Depending on the efficacy of your squeegee or cloth, you may not have either of these on your glass after washing with the Sal Suds dilution. A little bit of alcohol or vinegar is OK with the Sal Suds, but too much and there’s some chemistry that happens between them. Since there’s only 1/2 Tbsp of Sal Suds in the Lite solution, you couldn’t add very much alcohol or vinegar to it. There wouldn’t be much point to doing so. If you need the follow up spray, keep them separate.

Lisa Bronner says:

Hi Sara – I don’t know brands for this, but I got one with a metal handle and black rubber edge. Pretty heavy duty. I probably bought it at a home improvement store where they sell industrial cleaning supplies.

David Shinkle says:

A few years ago (2012) you were going to do a video on cleaning car window responding to a comment by Tom. Any luck?

Lisa Bronner says:

Technical aspects of filming outside stumped us back then, David, but we’re tackling it again this year. Stay tuned!

Window Cleaning says:

Great post! Been reading a lot about cleaning my windows. Thanks for the info here!

Lisa Bronner says:

Hi Kelz – I keep a squeegee in my shower and whoever uses the shower has to squeegee the glass right afterwards. My kids think this is great fun. The squeegee greatly reduces water spots and build up on the glass. The tile I clean with my Sal Suds All Purpose spray. I also clean the glass weekly with my vinegar solution glass cleaner.

All the best,

Kelz says:

I have a shower just like that – what do you use / do to keep it so sparkling clean?

Lisa Bronner says:

Hi Jenifer – The bubbles in club soda last as long as your typical carbonated drink – maybe 3 or 4 days. This is why I generally go with the vinegar. I don’t have to use up the whole bottle all at once that way.

All the best,

tanya poe says:

i love your website and I have two websites that are devoted to homemade house cleaning products and another one for homemade skin care products called easyhomebeauty on the yahoo groups website I saw some really interesting stuff on your site thank you. Tanya Poe

Catherine says:

Thanks so much Lisa, that’s super info. (I hadn’t realised I’d thought I had cutitcles in my hair!…ha ha ha.) I’ll keep on searching for an all natural hair washing product with an acidic ph…..either to buy, or preferably find a recipe to home-make. Meantime Sals Suds is ordered and on the way and I’m looking forward to using it to scrub-a-dub-dub my house.
Best wishes!

Lisa Bronner says:

Hi Catherine – Sal Suds is not formulated for personal care use – hair or body. However, having said that, neither will Sal Suds hurt you, although it may cause dryness. Looking at the ingredients, there is some overlap with conventional shampoos, because they both are detergents. But I still don’t recommend using it as your daily wash. It does not circumvent the “dyed hair” issue because the pH is still alkaline. Not all detergents have an alkaline pH, but Sal Suds does. It is the pH that opens the hair follicles, so dyed hair needs an acidic pH. I have used Sal Suds on my body in extreme cases – I’m remembering paint in my hair and on my body, and one time it was oil in my hair.

I have had feedback from customers who have used Sal Suds as a shampoo successfully, but it’s not something I or Dr. Bronner’s recommend.

Is that muddy enough for you? 🙂

All the best,

Cathy says:

Hi Lisa,
again thanks so much for all your advice, I’m always coming back here and wish our local health shop would stock all Dr, Bonners products. Just rang them now to ask them to, and said they will order some more. Including the Sal Suds.
(1) Re: Cyra’s comment above (passing on the rubbing alcohol tip) she says she uses diluted Sal Suds as a hand/body wash, and she uses it as a shampoo also! Could you confirm Sal Suds is ok for body and hair washing. ~ ~ ~ ~ ~ ~ because somewhere on your site you explain that soap is not good for dyed hair as it opens the cuticles….and that shampoos are used for hair because they are detergents. Is Sal suds a detergent? If so I was wondering why you don’t recommended using Sal Suds as a shampoo instead of the using the Castile Soaps – is there a reason?
thanks in advance,

Alisha says:

I’ve been using a mix of 1c water, 1c alcohol & 1 tbsp white vinegar in an empty spray bottle. It works great!

Lisa Bronner says:

@Alisha – That sounds like a great combination, too! There are so many ways to do these cleaning tasks safely.

All the best,

Lisa Bronner says:

@ Cyra – Thanks for the tip! I’ll have to try that one out myself. Do you spray it full strength? Do you use a squeegee or a cloth to wipe it off?

All the best,

cyra says:

Lisa? While I use Sal Suds for hand/body soaps (diluted w. water and fragranced w. lavender or orange essential oil) and shampoo, as well as for most of my home cleansers, from laundry soap to cabinet, floor cleaners, (diluted) I use plain old rubbing alcohol for my windows, inside and out. It cuts through everything. I use it on car windows & mirrors, too. It’s a one-step solution, which I appreciate, since time is money, too.

Kymberly says:

YES…alcohol is my go to product to clean glass and mirrors too…works great on stained glass lamps that get all that dusty greasy on them (you don’t notice it till you attempt to clean them 🙂 )…tile, fan blades, glass, probably anything nonporous

Tom says:

Great video, very informative. I’d like to see one about interior/exterior car washing as well!

Lisa Bronner says:

Thanks, Tom! I’ll put one up soon about cars.


Tadgh O Shea says:

Just to share you should never use Vinegar even when mixed with water to clean a mirror, Vinegar is acidic and its continuous use will cause detrimental damage to the silver backing of the mirror.
This is the reason why all mirror manufacturing companies will always recommend not to use Vinegar when cleaning their mirrors.


Lisa Bronner

Green means life. “Going Green” is living in such a way to promote vitality and vibrancy in every sphere of life. Grab an idea to make your days healthier, simpler, and more beautiful at their core.