Im having trouble toilet training my little pug cross, shes 5 months old and had her since 8 weeks. From the start i did the whole taking utside first thing in morning, after a play, after a drink etc. When she went to the toilet i would give prase for doing it outside. I was told to try and limit the prase and treats when she goes outside as when im not there she wont get a treat so why go outside.Now when im home she will just get up walk outside do her stuff and walk back in or do what ever without making a fuss. But when im out she wont bother and just goes inside (got a dog flap). Any ideas.

does she use the dog flap when you are home ?

yeah uses it all the time when were in. Just dosnt when were not.

hmm strange.. maybe she doesnt feel safe going out when nobody is home. Maybe some one else will have an idea :)

Who told you to stop giving treats...

You should only decrease the ratio of reward when the dog completely understands the behaviour in all circumstances - even toilet training!  If I were you, I'd go back to giving treats after she toilets outside, until this becomes more of a habit - she's only 5 months old, so it's too early for her to have learnt this behaviour completely.  Is she crate trained?  How long are you leaving her for at a time?  Could you crate her while you're out, this might help to break the cycle?