http://articles.mercola.com/sites/articles/archive/2000/11/12/black-cats.aspxBlack cats are much more likely than lighter colored cats to trigger allergic reactions, although researchers are not sure why. Way Healthier Air Purifiers duplicate Nature's own methods by creating ultraviolet lightrays and hydroxyl radicals to oxidizeenCommunityServer 2008.5 SP1 (Build: 31106.3070)