Husband's hoarding tendencies driving me up the wall

We've been married 10 years. While we get along pretty well, his hoarding tendencies are a real challenge. I prefer a very clutterfree environment, in fact its pretty essential to my feeling of well being. DH on the other hand is perfectly happy to live with crapola everywhere and enjoys nothing more than buying more stuff to add to it.

For the most part I manage to keep our place from looking like a heap of rubbish, though he still has his 'crapola corners'.

We've got a little party at our place this weekend to celebrate my 60th, and getting him to clear his little corners for the carpet cleaner coming tomorrow is like pulling teeth. We've had a row about it just now - hence my venting off here.

Do any other GNetters face the same challenge and how do you manage and cope with it? I must admit, sometimes it feels like a losing battle that I feel like giving up on to drown in a sea of crap.