My front yard looks like a desert wild weed display and my backyard is growing weed trees. I've used weed killer in the front with little success. Just turned a portion brown. I'm afraid to use it in the backyard because I have dogs. I recall salt killing just about anything. I was thinking about getting a couple bags of rock salt, mixing in some water with a cap of chlorine, and pouring around my front yard. Does anything this is a bad idea? Doesn't it seem like a more eco-friendly solution? Please advise.