Homemade Outdoor Window Cleaner

4 Materials
20 Minutes

Chemistry Cachet is back with another science based DIY.

This cleaner is for outdoor windows, but it also works for indoor windows too! Be sure to read the blog post for instructions on that :) (chemistrycachet.com/homemade-outdoor-window-cleaner/)

This recipe is very easy to make, but it is also super cheap!



  • 1/2 cup water
  • 1/2 cup white distilled vinegar (5% acidity)
  • 1/4 tsp blue Dawn ( Why blue dawn? Read more here)
  • Basic spray bottle
  • Sponge or scrub brush (You can also use a microfiber scrub brush)
  • Rubber hose with spray nozzle

Directions for mixing the DIY outdoor window cleaner:

  1. In your spray bottle, combine the water, vinegar, and dish soap.
  2. Set the nozzle to stream if possible which will make it easier to reach all the window area.

Curious about why these ingredients are used?? Or different methods for using this? Read the blog post here.

The Easiest Way To Clean Outdoor Windows With Our Homemade Outdoor Window Cleaner:

  1. Spray your window with the homemade cleaning solution. As we mentioned above, setting it to stream can help reach taller areas.
  2. With a sponge or scrub brush (use anything soft and safe for windows), scrub the window area as best you can.
  3. With a spray nozzle attached to the rubber hose, spray every part of the window making sure all the cleaner is removed.
  4. You can air dry or wipe with a microfiber cloth to dry!

You can also just SPRAY AND WIPE this solution! Be sure to read these tips in the blog post.

Before And After
Resources for this project:
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Alexis @ Chemistry Cachet
Want more details about this and other DIY projects? Check out my blog post!
Frequently asked questions
Have a question about this project?
  3 questions
  • Ticia Ticia on Aug 09, 2020

    IDK if anyone's asked this previously but here goes - do you pre-wet the windows with the hose before spraying on your solution? I only ask because 1/2 cup each of vinegar and water isn't very much so if you are cleaning multiple windows, do you prepare the solution in a large batch or keep refilling your spray bottle with the same amounts all the time. Since I'm getting ready to do my windows, I'd like to know and what about streaking? (on the glass not the people kind). TIA

  • DMc DMc on Aug 10, 2020

    Wondering if this would work on plastic windows in a screen porch?

  • Ginger the farm gal Ginger the farm gal on Aug 19, 2020

    I use this also, but the cleanest windows and mirrors, I ever had were cleaned with kerosene and very hot water. What is your opinion of it?

Join the conversation
2 of 12 comments
  • Patty Patty on Feb 05, 2022

    Thanks for the tips

  • MSLady1125 MSLady1125 on Aug 16, 2022

    Thank you for shining some light on why blue Dawn is used. I love the chemistry of it all. Thanks for all these cleaning tips.