bowel cleansing question

tomorrow will be the day i am starting my bowel cleansing after i was able to get a hold on 3kids, as with the hectic schedule of childrens needs and wants i am deciding to try to stay healthy, one step at a time...first is to start with bowel...but i have a couple of questions

How long can i do a bowel cleanse, ive taken IF#1 for about 1yr and tried to do colon cleansing but just didnt, now i want to do

When should i take my probiotic?

as i was reading posts about cayenne, i dont have the time to wait for a tincturing since i am doing this tomorrow...is it possible if i just eat spicey foods that has thai chili pepper in it for, would that be effective enough for me to do the job?

thanks, vk