I've noticed that Mika never pees or poops outside of our property!!! Even if we're out all day (6 1/2 hours tops!) If we are out all day, I take food/water with us but she doesn't relieve herself til we get home! As soon as we get through the back gate she squats and pees for all she's worth!!! If we're at home she is regular and has no problems 'going' I think she just prefers to 'go' at home
I've never had to use poop bags, I always carry them with me 'just in case' but they're still unopened!!!
Oh forgot to mention she is trained to go outside and has never used pee-pads so its nothing to do with that!