Cream leather suite and big slobbery dog

[Catsarebastards]

I cant keep it clean. He sleeps on the sofa/chairs and has done all his life so wont change and i dont really mind apart from the dirt. I used to cover them with throws but it was a lot of extra washing and the point of having leather is that it is wipeable.

So how do i keep it clean every day? It just looks constantly grubby.