My basic formula (it is no trade secret) is 1 gal distilled water, 1 qt (32 oz) 91% IPA, and 1 oz pure Triton X-100--so all you need to make it is a gal jug of distilled water, a quart of IPA, a shot glass to measure the Triton, and a clean bucket to mix it up in.
Triton X-100 (and other Tritons) is a common non-ionic surfactant used in a zillion household products (dish soap, laundry soap, hand/body soaps/shampoos, etc), so it is "safe" and readily available in pure/technical grade on Ebay or Amazon. Other similar surfactants are the Tergitols and Tweens--different brands/manufacturers, similar chemistry and uses. All a surfactant does is "make water wetter"--water is a universal highly-polar solvent, so all the surfactant does is reduce the surface tension of the water to make it more effective.
I make other solutions for different applications, containing "flocculants" to remove heavy grime, and Sporicidin to disinfect/kill mold and protect from re-infection.
I try to speak the truth--ask me any questions regarding the chemistry--keeps me on my toes.
savatage1973--BS, MS, PhD, DABT--my main "mentor" professor (with two PhD's and an MD) used to refer to them as bull-shit, more-shit and piled-higher-and-deeper--so that's what that's worth. I never figured out what to do with DABT. Spent too many years in the chemical/pharmaceutical industry, and now own a construction company--go figure