Yes, Natalia, I use live yogurt. I tried using yogurt starter (dried acidophilus and other probiotics used to make yogurt at home), but it didn't seem to work as well.
You probably call it something different there, but it is a plastic bag usually filled with water and/or other liquids (depending on your objective) with a nozzle and is inserted in the vagina. Kind of like an enema in a different orifice. Instead of liquids, I spoon about half a cup yogurt into it and a little warm water. Insert on a daily basis for about 2 weeks, then every few days, once a week and so on as you need it. I find it takes awhile for the acidopholus bacteria to take hold, but it eventually overcomes!