| Salt, boiling water, glyphosate (or other herbicide) - all will kill the weeds, but none will prevent the germination of weed seeds that find their way to the cracks. This will be a perenial problem for you. My best solution is a weed dragon, although caution should be used and always have a fire extinguisher on hand. You will get much better control of weeds growing between hard surfaces with a flame torch than most anything else. I have heard that filling the gaps with polymeric sand may have a degree of protection, but it's expensive stuff if you've got a substantial area of interlocking brick. If you do consider getting a Weed Dragon, get the upgraded model with the squeeze trigger handle, it gives you much better control of the flame. |
Here is a link that might be useful: Weed Dragon Flame Torch
