Step 1

Measure and Mix Liquid Ingredients

Use liquid measuring cups to measure the volumes of vinegar, rubbing alcohol and hot water. The water doesn’t need to be boiling, but as hot as it comes out of the tap. If you have hard water, opt for two cups of distilled water heated on the stove for the best results. 

Combine the liquid ingredients in the clean, empty spray bottle using the funnel.

Dry the funnel well once complete.

Step 2

Add Cornstarch and Shake

Add 1 tablespoon of cornstarch into the bottle using the funnel. Consider cornstarch your magic ingredient. It offers mild abrasion, but dissolves away clear as it’s used. Cap the spray bottle and shake-shake-shake to dissolve the cornstarch into the warm liquid.

Step 3

Put It to the Test

Proceed with cleaning dirty glass and mirrors as you would. Wipe promptly in circular motions with a clean, absorbent cloth.

Keep in mind that coffee filters are amazing for wiping clean windows, too!

Pro Tip

Once the cornstarch settles, you may find that some of it settles – just be sure to shake the solution well before the next use.