I really think that you're not around enough to properly train the puppy where to go to the bathroom. I stay at home w/my puppies and they still work on potty training daily even after months of practice.
Some get it sooner than others. One of my puppies would lay in his own urine because I bought him from a petstore..He didn't even know what a bed WAS until he came to live with me and was used to stopping and peeing in his crate whenever the urge hit.
It takes a lot of time and energy to train a puppy. If you or your gf can't be there.. can't you hire someone to come let the puppy out at least mid day and play w/him, and take it outside to potty?
I really think it's nearly impossible to potty train a puppy being gone as long as you guys are. Some people can do it, but in most cases they come home on their lunch break and spend lots of time w/the puppy in the evening and on weekends teaching it good behavior.
Think about it... if you were left alone as a child for hours and hours a day.. how would you learn the lessons that you needed to? You probably wouldn't.. or the lessons wouldn't have been taught correctly. It's a similar situation with a puppy.. they need praise, routine, patience and understanding to learn how to be a good canine citizen and make the behaviors that their humans desire a habit.
I guess my only advice, although I truly think this puppy is alone way waaaaaay too much is to get an Xpen.
If you can, get a small crate to put inside the xpen w/just a plain folded old sheet or towel for comfort (easier to wash if there's a mistake), line the entire pen w/pee pads (if you want the puppy pee pad trained). This does not give the puppy an opportunity to make a mistake because the entire surface is lined with the correct spot to go potty.
Slowly start taking away the pee pads.. if the puppy continues to go on the remaining pee pads PRAISE like crazy, give lots of treats, and slowly keep removing the pee pads over the next week or so. If there's an accident.. go back to putting more pee pads in the Xpen until he gets it.
This method will only work if your puppy is not a pee pad shredder... and it's not my ideal method.. but w/your hours I see it as one of the only ways Tanner can teach himself

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