doesnt say how many months mama.......but i will say that your child being ready is a huge part of potty training. cues to look for: grabbing "themselves", telling you pee or potty, or interested in you, spouse, or siblings (if there are any) when you go to the bathroom.
once you think your child is ready, consistency is key. i like just taking the in the bathroom after a certain amount od time. i started every 30 min, then to 45 when there wasnt an accident, and now about every hour works. but my step son is 3, and can hold it longer than little ones. and i'll be honest i hate pull ups, i feel like its just like a diaper, they get comfy and so its easier to have an accident. but i still use them for nap and bedtime. i like that better than washing sheets all the time. once they make it through the night, or nap time a few times without an accident i'd say go ahead with undies then too. GL!
at 1:50 PM on Aug. 11, 2009