I could cry reading these stories. Cry with relief that is!
I have four year twin boys - four in January. We started potty training when they were 2 and a half - they weed everywhere on the first day so we abandoned it. We started again at 2 weeks past three, and they were great. Weeing in the potty, pooing ok too. They were in nursery then, and although they had a few accidents, it really wasn't many.
Don't know what happened, but after about 6 months, they both started to regress. Started pooing in their pants all the time. We'd ask them countless times if they needed to go - they would poo while we asked! If we dragged them there and made them sit till they went, they'd hold it in. Seriously, DTS1 fell asleep on the potty once he'd been on there so long.
We tried sticker charts (which worked for a month), little prizes, promises of more sweeties etc - nothing worked. They still have the odd poo issue, but they wear nappies at night still, so if they need to go, they will go in those
Thankfully not as often.
They are however, very lazy, and although the poo situation is much better, now they are weeing themselves daily. If we don't drag them to the toilet they won't go. We have a 17 month old as well so sometimes it's not easy!
My mum likes to make helpful comments like, 'I wonder why they do it?'. Well, I don't fucking know mum, they are little boys and it obviously doesn't bother them. I don't know why!
Phew, feels better to write it all down! I did a few months ago as well, as I totally lost my shit with them when they both pooed themselves more than one occasion on the same day.