How can i stop my dog pooing on the floor???

[fifisworld]

I have a boxer dog who is about 6 months old. He goes out for a run almost everyday and is always out in the garden etc, but he keeps coming in the kitchen and pooing on the floor even if he's been out for a hour or sometimes even if the back door is still open for him.
I dont know what to do about it.
Does anyone have any suggestions or experience with this??

Thanks for the replies.

Magicmayhem- he goes for a proper run, ie out to the field etc everyday, as well as walks and he's out in the garden all the time.

He's not really left on his own, there is 2 days a week where im out for quite a while with work but mil comes along with her dog and takes them out etc.
Theres no anxiety/seperation issues.
Im off work now until thursday so will spend time outside with him, its not easy with ds and my evergrowing bump though

Second MBP

I was just saying that from a excerise point of view he gets a good run everyday,plus walks as often as we can fit them in, and the door is open for him to go in the garden just about all day when we are in.

I will try to go back to basics with him over the next few days when im off and see if that will help.
Also he does get praise when he does anything outside,its just catching him doing it that can prove tricky as he can be out for ages and not do anything.
Thanks again for the suggestions

definately agree witn the excercise - although I really feel for you -it can't be nice doing all the bending over poop scooping at 29 weeks. I do think some dogs are just slower than others -we have 2 and they were vastly different with when they both mastered toileting. Our terrier cross used to LOVE pooing in my dd's room. Of course we cleaned it the best we could, and he got 2 long walks a day. But he still had occasional accidents until he was about 8 months old. Then he "got it". Just hang in there!!
Lots of positive praise is good though, and now he nearly toilets on demand.
Good Luck!!

Agree with EmsMum - take a poo outside into the garden where you want him to go - and let him have a good sniff. It is weird but our dog seems to need to sniff an old poo to help him go (the equivalent of my cup of tea in the morning - sorry TMI!!!) Another thing I was taught is to say a certain word when you want him to go to the loo - we say 'go toilets' - so when out on a walk/going in the garden we say 'toilets' when we want our dog to go. It is now a strong association and our 2yr old dog almost goes to command now! Choose your word carefully though as we learnt this from a vet who chose the word poo-poo and she gets completely embarrassed in public calling 'poo-poo time'!!!

MBP - I couldnt rub his nose in it even if i wanted to, he's too strong for me to move

He was toilet trained when he was younger, he used to go straight to his paper before he was able to go out.
For some reason though he seems to wait until he comes back in to do anything, not all the time, but quite often.
I do try to watch him when he's out but like i say sometimes we can be out there for a hour and he doesnt do anything then when we come back in he does.
I will see how things go over the next few days with him and watch him as much as i can when he's out, its just hard with having ds as well coz obviously there are times when he needs attention so the dog has to be left on his own outside.