The stuff we get is only grey, not white. I can see where the white would be easier to see. I just find when they crawl thru it, it gets very high clumps that then fall in the water all the time. The aspen tends to stay level even if they crawl under it, it returns to the original level when they pass and so it doesn't get up over the lip of the water dish. If one little piece of aspen does get in there, it doesn't contaminate the whole bowl. One piece of carefresh tends to expand into a huge glop in there......kind of gooey. I'm just going to switch back I think. You could have my bag if you were close!