We went 6 weeks before giving up. She still poops in the toilet and peed in it plenty, but also peed everywhere else. Every child is different. Some of mine it was a couple days, others it was tones of trial and error. My earliest potty trainer was 18 months and the latest was 3 1/2. This last one might push that number out further.it seriously works. its crash and burn, you're gonna clean up some messes on your floor, but 4 days is enough.