I'm also in OK. Running dye in our feb/march app of pre/gly is pretty much standard procedure on dormant bermuda. With the chemlawn gun, you can spray from the concrete side towards the lawn and outline the lawn. This reduces overspray on the concrete.
I like using dye. I know its expensive and messy, but it really is great advertising and is a good way to track coverage if your training a tech.
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