how can weed and crabgrass killer target said specific plants without damaging common types of grass?

Question

how can weed and crabgrass killer target said specific plants without damaging common types of grass?

In: Chemistry

Answer 1

Some of it is clever marketing. Clover used to be a common part of lawns. Clover is killed by most broadleaf herbicide. Herbicide companies convinced people that it shouldn’t be part of ‘good’ lawns. 70 years later broadleaf herbicides are harmless to good lawns.