are you tired of cleaning product fluff? 'blue' colored cleaner for windows, 'brown' colored cleaner for wood, 'lemon yellow' for all-purpose bathroom cleaner... theory.™ all-purpose cleaning solution has a pH level of 7.5 and is fluff-free. Our non-ionic cleaning solution leaves no residue-attracting charges behind and is completely biodegradable, dye-free, and does not contain heavy fragrance additives. it's great for all general cleaning needs and is safe for all surfaces and fiber types including natural stone, carpet, wool, silk, metal, glass and mirrors and more. our product was developed by cleaning industry professionals who grew tired of the "multiple bottle" solutions (claiming to be specialty products) for home and business cleaning needs. our theory.® is one bottle to rule them all. lastly, we believe in sustainable cleaning solutions for all homes and businesses. our food-grade, high-quality bottles are meant to be reused time and time again. we highly recommend that you purchase our 1-gallon refill bottle which makes 32 RTU all-purpose cleaning bottles, 25 bottles of carpet, tile and wood cleaner, 256 bottles of window cleaner, etc.