**** PLEASE KEEP IN MIND 91% ALCOHOL IS BEST!**** Unfortunately I only have 50% and 70% on hand. IF you have or are able to get 91% alcohol use 2 parts to 1 part gel. Any alcohol concentration less than 91% will not result in a sanitizer that is 60% to 70% meeting the CDC guidelines. If you are like me and have just the lower concentrated alcohol I suggest using it straight and undiluted in a spray bottle for your hands in a pinch. This is no substitute to GOOD HAND WASHING! Remember Alcohol is flammable but you all are smart and know that! Please share any information or experience you have in the comments so we can all have as much information as possible! Stay Well!