homemade nontoxic weed killer Mar 27, 2013 15:40:08 GMT -5 Quote Select PostDeselect PostLink to PostMemberGive GiftBack to Top Post by Darcy Christensen on Mar 27, 2013 15:40:08 GMT -5 Mix 1/2 gallon of Apple Cider Vinegar, 1/4 c sea salt and 1/2 tsp Dawn liquid dish soap and pour into a spray bottle. Then just spray weeds thoroughly.