As a 16-year-old in Wichita, Kansas, Kirstie entered into the workforce as a housekeeper. A childhood friend's mother, Anne Kathol, hired Kirstie to clean their house and taught her lessons she still carries with her today.
"Mrs. Kathol said: 'Put your back into it. You got to put a little pressure. It's not going to clean itself,'" Kirstie says. "She made me feel very validated. ... And she gave me the work ethic."
Watch as Kirstie puts her cleaning skills to the test.
To this day, Kirstie says she can still make a sink sparkle. In the bathroom, her favorite room to clean, Kirstie uses a special cleaning solution: vodka.
"You buy the cheapest vodka in the universe in big gallons, but it doesn't work if you have a housekeeper who's an alcoholic," she jokes. "Vodka is antibacterial, and it's not toxic and it doesn't have any scent. ... It actually makes things really shiny and really clean, and it's actually cheaper than cleaning products. I've used it for 20 years."