Never knew Cat litter was good for that. Wouldn't try it though, or else i'll end up with a very sh!tty garden
http://www.walesonline.co.uk/news/wales-news/2010/01/06/rush-to-buy-salt-and-cat-litter-91466-25535081/
http://www.walesonline.co.uk/news/wales-news/2010/01/06/rush-to-buy-salt-and-cat-litter-91466-25535081/