Oh dear - unfortunately, some dogs just love to chew for different reasons - not all separation anxiety, though.
Bramble has never been destructive - until now!! Out of the blue she has taken a liking to the settee......
I saw a tip on here about Olbas Oil. Just dab a few drops on the area (in my case the inside corner of the cover) and the dog is put off by the smell. It works for us, but I have to kepp re-applying it.
I agree with what Rachel has said about the crate/ pens. We invested in the largest crate we could fit in the utility area, and have shut her in there on occasions....... we make it as homely for her as possible, and that removes her from the problem..... but, of course it doesn't cure the problem.
If Bailey is just going to be a chewer, maybe crating him whilst you go out is going to be the answer....... it isn't cruel - so long as its not abused.......