Weed control between concrete patio stones?
We have a patio made of 2ft by 2ft patio stones, with 1/4 inch to 3/8 inch spaces between the stones. The weeds drive me nuts! Any ideas on what I can fill in the spaces with to prevent weeds from growing? I tried sand, and grew weeds, I tried screening and couldn't go on the patio in barefeet. Dirt grows lotsa weeds. I was thinking of using Top & Bond concrete patch, and puting the powder between the stones, watering it, and waiting to see what happens if it hardens. What do you think?
Thanks to all of you! I have leftover rock salt from last winter, & vinegar is a great idea. I wasn't looking forward to playing with concrete anyway. Unfortunately we have a no herbicide by-law so Roundup is contraband here.