The best weed control method for your lawn depends on the type of weed found on your lawn. The most common weeds are dandelions, crabgrass, chickweed and thistle. While Crabgrass can be controlled by the application of pre-emergence herbicides, Dandelions and Thistle can be controlled by simply pouring vinegar over the weeds. Chickweed should be controlled by handpicking or applying non-selective herbicide on the affected part of your lawn.