PSA: Kills Dandelions ... Doesn't Kill your Kids or Pets! 1/2 gallon of Apple Cider Vinegar 1/4 c table salt 1/2 tsp Dawn liquid dish soap Mix above ingredients in a spray bottle. Spray weeds thoroughly. The Dawn dish soap strips the weed of its protective oils so the vinegar can work with deadly force. Actually better than insecticides you buy at hardware store.
Homemade Weed Killer 1 gallon of white vinegar, 1/2 cup salt, Liquid dish soap (any brand), Empty spray bottle. Put salt in the empty spray bottle and fill it the rest of the way up with white vinegar. Add a squirt of liquid dish soap. This solution works best if you use it on a hot day. Spray it on the weeds in the morning, and as it heats up it will do its work.