Safe weed-killer for stone/brick patio?
Is there a safe weed-killer option that I can use this spring on my stone/brick (whatever it is) patio? The weeds grow up in the sand filler between each brick, and they are very aggressive. I took them out by hand all last summer and it felt like such a waste of time, when the mid-western climate made them grow back in a day or two. Any suggestions?