#Does what it says (2009-06-19) I ve used this product for several years now and the neighbours are always commenting on how lovely my grass is. One of my neighbours actually purchased a cheaper version and it killed most of her lawn!! So beware of cheap versions. I originally purchased this product in the plastic container as it had a spreader on top which makes it easier to apply. Then, I just buy bags or boxes to top the container up. My grass looks greener and after a few days and thicker after a week or two. Any weeds or moss, go dark and eventually die, then you just rake them ...