These antiseptic gels can easily be concocted using basic household items.
In a small bowl, mix ¼ cup each of pure aloe vera gel and grain alcohol with 5 drops of tea tree essential oil. To make it smell less pungent, add 5 drops of your favorite fragrance oil. Using a funnel, pour this blend into a bottle small enough to stash in your purse. (Rinse out an empty tube of makeup or lotion to make use of waste.)
http://www.ecosalon.com/diy-hand-sanitizer-and-surface-disinfectant-spray/