DS2 is 2 years 10 months. Has been successfully potty trained on the wee front for about 3 months. Reliably dry during the day, rarely wets himself and takes himself to potty / loo or tells me he needs to go.
Poo is a whole different story! For the first month or so he just used to poo his pants. Would run off and hide somewhere and before I could get to him he would have done the deed. After 4 weeks of throwing pooey pants away I gave him the option of having a pull up or 'poo pants' to go in. He liked this idea and this is what we moved to. Seemed liked a good interim solution as it put him in control, was easier all round in terms of cleaning him up (just changing a nappy) and everyone relaxed.
Fast forward another two months and he is still asking for poo pants for every poo. Will not entertain the idea of going on the loo or potty despite bribery of the highest order! Gets very upset and distressed if we try to sit him on the loo and it's just really horrible, so I always cave and give him the pull up. Nothing will convince him to do it - he sees his older brother go and his friends at nursery but isn't bothered at all. I ask him why and he just says he doesn't want to. Doesn't mind it being babyish etc. We now say he has to go in the bathroom and stand next to the toilet in his poo pants which he is happy to do - tells us to go and give him some privacy and closes the door 
It's not the biggest problem in the world cos I know he is still young and at least he is in control and not holding it in. It just seems a dreadful waste, both financially and environmentally, to be pooing in a pull up when there is a perfectly good toilet there! He has 2 or 3 times a day!
Worried we're still going to be in this position months down the line. Anyone ever had this with their DC? If so what helped them to make the transition?
Thanks for reading.