This may be a tip?

"Metromint Water Bottle Spots"
 uploaded by stevendepolo to Flickr

I just found an ad in a magazine for "Clean Bottle" and it seems to be the relief to some of my dish-duty frustration.  Those frustrations - not being able to reach the bottom of the bottle to clean it!  But this handy thing - well both the bottom and the top come off for cleaning!  Genius!

Have any of you heard about this or used it??