Does anyone know of a good spray/powder/anything to put down on rocks to prevent weeds from growing?  I keep spraying the darn things but they grow back.  I've heard of using a pre-emergent, are there any landscaping experts on this forum?  I'd like to douse my rocks so I don't get recurring weeds every few weeks.

Thanks!

Weed prevent by Miracle Grow is GREAT.  It's granuales comes in a yellow container.  I found it at home depot for $10 lasted a good long time. 

You know I actually have some left that I'm not going to use, if you're interested in trying it and want to try it in a small area you can have whatever I have  left.  It's not nearly enough to cover your whole front yard, but if you want to put it with some other stuff or try a small area and see how it works out for you or whatever just let me know and you can have it.

Thanks nutmeg!  I actually have some that my bro gave me so I'll give it a shot!  :)