WHO KNEW? I did this, and I have NO weeds/grass growing in my pavers! 5 pound bags of Baking Soda at Costco for less than $5.00 – then : Sweep Baking Soda into Sidewalk Cracks to Discourage Weeds. Simply pour or sweep a thick layer of baking soda into sidewalk and patio cracks. The baking soda will kill any small weeds that are already there, and prevent new ones from sprouting

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