For example, 2,4-D is a widely-used selective herbicide that effectively controls broadleaf weeds in lawns without damaging grass. Glyphosate is a popular non-selective herbicide that effectively eliminates both grasses and broadleaf weeds. These types of weed killers are ideal for controlling annual grasses and broadleaf weeds. Pre-emergent weed killers are designed to prevent weeds from germinating and growing in the first place. Post-emergent herbicides are designed to kill actively growing w...