If you would-be so kind as to advice me of the best course of action I would be grateful Problem: I bought a new house last year. I'm mid may I applied Scotts crab grass barrier to the lawn. Then about 4 weeks later I applied some lime on a friends advice he said it will help the lawn. After about 3 days I noticed a large increase in crabgrass and it got worse from there, about 80% of the lawn was now crabgrass. I applies come liquid crabgrass killer to see if that would help, it did very little to help. So my question now is what steps should I take?? I have looked at the grass this week . The old grass and crabgrass comes away by hand very easy when you pull it . Should I Aerate??? thatch ?? what steps would you suggest I do. Look forward to your reply Charlie