Wow, 3 years since a post on this. Here is my two sense. I started using this a few years ago. Remember when Mary Ellen had that tv show? She gave out the recipe and my sister still had it after all those years.
24 oz. distilled water
3 oz Vodka (Potato vodka is preferred) the cheap stuff is usually made from grains and would not be as starchy so you need to buy the $12-15 dollar bottle.
a few drops to 1tsp. of essential oil as per smell preference. Does not need to be lavender. I like the linen scent one myself. Found for a few bucks at Walmart.
Mix the essential oil with the vodka first before you add it to the spray bottle. Done.