So why would someone want to make their own glass cleaner? It won't really save you money, I'm guessing it costs almost exactly the same to buy new versus mixing your own. A local grocery store has new bottles for sale at $0.99. You can buy the needed ingredients for roughly $2.00 and it's enough to make about 2 bottles. You do the math.
There are a few reasons I can think of why it's still worth your time to do this. By knowing all the ingredients, you can assure that you're not disposing of dangerous chemicals into your trash. Re-using the bottle will also mean less trash to dispose of, and even if you recycle, it's still a waste of resources to make it usable again. All "Save the Earth" motives aside, it can be a fun little conversation piece with your friends. And finally, if you have pets or little tykes, I consider this to be a "less-dangerous" cleaner than what you may buy commercially. Knowing the four commonly available ingredients (three of which are consumable) could be resolved easier than trying to pronounce the five-syllable ingredients to a poison-control center employee. To be fair, I haven't tested the effects of drinking this concoction or that of the store bought variety.
This is my first instructable- just don't be an idiot because neither this website or myself are responsible.
Step 1: Gather Your Ingredients
There are several different "recipes" for creating glass cleaners, this is for a medium strength cleaner. A quick google search will get you an ingredient list for weaker and stronger cleaners. Many of those other cleaners will contain ammonia, and a quick word of caution- it shouldn't be stored near bleach as even the vapors can create a mixture that can kill you. Of course, most of you will know this already. To summarize this thought, if you don't have some basic idea of what you're doing (say, a passing high school chemistry credit) you probably shouldn't be playing around with chemicals anyway. Some other points of caution- if you use stronger chemicals than what I have, you might consider household cleaning gloves and a paper mask.
Okay, here's what you need:
1/2 cup rubbing alcohol
1/2 cup vinegar
1/2 liter water
Capful of lemon juice
(optional) few drops food coloring