NikWax, anyone used it?

yes I have , several time.
The trick is to either do it in the bathtub and take your time /care doing it (several rinses after the first wash) or if you use a front loader (NOT a to loader) have an empty HOT water cycle first to get rid of detergent residues lurking inside the machine.
When you move the bag for drying use a laundry basket (that is gently shift the bag into the basket, don't lift) or use the cotton bag you may have with the quilt/sb (not the stuff sack…)
The idea is not to stress the baffles.
Obviously once inside the basket/cotton bag you squeeze the water out of it, that goes without saying and that is why I am printing it instead.

BTW, Down Soap is the same stuff sold as Pure Soap (of animal/vegetable origin, NOT detergent (chemicals))often sold in flakes (yes at your local supermarket…)

Nate- the other thing to keep in mind is that Nikwax Down Proof is their version of a wash in waterproofing agent. If that's your intended goal then do your research and go for it! (Some people are skeptical of its benefits though.)

http://www.backpackinglight.com/cgi-bin/backpackinglight/forums/thread_display.html?forum_thread_id=30554

If you simply want to clean your quilt then you probably want Nikwax Down Wash or a gentle non-detergent soap, as Franco recommends.

First, dont be afraid.

Second, your choice is to wash it, or live with a non-lofting smelly bag. Pretty much limited worth, so realize if you dont wash it, its no longer worth $400. Like not fixing a broken car.

I cant say this enough, forget about machines. Downproof fabrics become virtually airtight when wet, it is difficult to move water thru them. A machine really does a poor job, especially rinsing.

Thanks Nick.
Somehow I must have had the wash bit stuck in my brain and read Down Wash rather than Down Proof.
No, never used Down Proof so no clue on how it works.
Down Proof was discussed in one of the forums but can't remember which or what the results were.

I'm blessed to have a pretty awesome front loading washer and dryer at my rental unit. The NikWax Down Proof product has always done an exceptional job.