We had a similar problem when Tobey joined us as there were times when my daugher was at school and both my husband and I were at work.

Because Tobey had already damaged the carpet in our hallway we let him and the cat (who was only a month older) have the run of this area, the staircase and a spare room upstairs where we put litter trays, puppy pads and a big comfy basket. We also left the radio on for them.

I was lucky to be able to go home at lunch to check on them and 9 times out of 10 Tobey was curled up in the basket with the cat! You will find as your pup grows that he will spend much of the day asleep if he is on his own and although this isn't ideal for him I am sure he will get more than enough love and attention from you when you get home!

I notice you said your pup has to stay outside - is there no place in the house that he could have as "his own" that can be redecorated when he is out of his chew everything up stage?