This is not the weed killer you want to use if you lack patience. I'm 7 days out and still waiting
Be patient with it. The Crabgrass will turn brown and slowly die overtime. I had two days of dry weather, and now it has become cold and rainy. Every evening when coming home from work I'll see more browning of the Crabgrass. Seedings Spout are still visible and you need mow your lawn twice to make certain that you capture as much of the Seeding as possible.
At the end of May I'll be power raking the entire lawn to remove the dead Crabgrass, and reseed the lawn.
It is great and it works as advertised
Sprayed the lawn last week with Tenacity + surfactant against existing crabgrass. No visual results so far.
Great product, fast shipping