I applied 2 lbs. AI of pendimethalin during March and .4 AI Barricade in May on my lawns. I have not had any crabgrass to speak of until this week. It rained 3 days last week, and now I have lots of crabgrass. I think that I am going to use all Barricade next year. I would like to get away with one app of .75 AI Barricade, but I don't know if that will last me all season in my climate. Crabgrass germinates for about 7 months here. How many people are using 1 lb. AI Barricade in the spring in warm humid climates like mine?