For the past 8 years I have used high dollar weed killer. I read online how to make homemade weed killer. The recipe is 1 gallon of white vinegar, 1 cup salt, and 2 TBS of dish liquid soap. I was wondering if this recipe would be safe to use around my pond. I would not spray it in the pond but around the rocky banks. Below is a link to a photo of my pond. You can see I get grass/weeds that grow in the rocky bank.