My 5 year old son is soiling himself on purpose and I don't know how to deal with it. It started off about 6 weeks before I gave birth to my third child and he was doing it in his pants and pjs at first. My baby was born 2 weeks ago and my 5 year old has now started pooing on the floor in his bedroom. He will occasionally take himself to the toilet during the day for a poo but it isn't regular anymore. We've tried star charts, punishing the soiling, rewarding pooing on the toilet, taking away toys/electronics but nothing seems to work. We know he's 100% doing it on purpose because when he was doing it in his pjs, we sat in his bedroom while he fell asleep and he didn't do it. My husband has also caught him squatting and pooing on his floor after he's been put to bed this week. He's been to the GP who fobbed us off and said he was constipated so he's had 10 days of laxitives but they made no difference.