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Dan from Muskegon, Michigan writes

If it briefly rained within a couple hours of applying Drive XLR8 Herbicide Crabgrass Killer, do I need to reapply?

I live in Western Michigan and did a spot application for crabgrass but did not use a surfactant.

Answer:

Drive XLR8 is rain fast within just an hour or so, so if you had several hours between application and when the rain occurred you should be good to go without need for reapplication. You will however need a surfactant mixed in if you want to see control over the crabgrass, so on your follow up applications you need to add about 2 tsp of a MSO type surfactant, such as Duo Stick. 

Answer last updated on: 07/14/2022

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