1 gallon apple cider vinegar
½ cup table salt
1 tsp. Dawn
Using a funnel, measure salt and Dawn into the gallon of vinegar. Mix by shaking and put in spray bottle using the funnel.
I bought the spray bottles for $1.00 at Wal-Mart in the clean supplies isle. Mark sure you mark both you mixing container and the spray bottle. Use the gallon jug for storage.
Spray the weeds or area where you do not want anything to grow. I sprayed the grass growing up between my bricks.
Just like conventional weed killers, sometimes nasty weeds require two applications. But feel good that you're spraying something natural and earth-friendly, not a potentially harmful chemical.
Do not do it if it is going to rain in the near future. Best condition is when it is sunny. This will kill what ever is growing so be careful not to let the wind blow it onto flowers or your garden.
Not only are you saving money, but you are using a product that is earth friendly. Good luck.