Pooping in pen

Question
Hi,

I have a 14month old female boxer who has a problem with pooping in her pen when we are gone. She is well housetrained when we are at home and will go to the back door and wait but she will poop whenever we are gone no matter how long we leave her, which is never longer than 4 hours.
She is fed twice a day and is walked after both meals, she will toilet on walks no problem but we always come home to soiled bedding.
Just do not know what to do now, so any advice would be greatly appreciated.

Answer
Well one thing you can try is to leave her outside for as long as an hour before you go out,that way it gives her time to go

Another thing you might want to try is if you know you are going to be gone for any length of time,don't feed her until you come back