Farmers and commercial applicators who use pesticides in mass quantities commonly purchase these products in containers known as “shuttles”. A shuttle is a plastic tank, in the shape of a cube, measuring approx. 4’x4’x4’, enclosed in a steel cage. These containers hold, typically, 265 gallons of a product. They’re called shuttles because they can be reused, “shuttling” back and forth between the dealer/distributor and the end users. The containers can be returned when empty, washed out, and refilled. If they’re refilled with a different product the labels are changed to reflect the chemical which is contained in the shuttle. Sometimes, the labels don’t get changed. And, sometimes, an unscrupulous customer will buy several shuttles and then return one with the explanation that they mistakenly ordered too much product. What they really did was to use the product and then refill one of the shuttles with a much cheaper product which has the same appearance as the labeled product. That way they get a refund for the price of the labeled product and are only out the cost of the unlabeled, much cheaper, product. Since some pesticides can be very expensive and some, which look identical, are much cheaper, this can be quite advantageous to those unscrupulous enough to engage in the practice. I’m aware of one case which happened in our county where the substitution resulted in the loss of several thousand acres of wheat on several farms which were sprayed by the same aerial applicator who received one of the mislabeled shuttles from the chemical dealer. The lawyering contest continues…
Judging from the photos in the linked article I would guess that the brown lawns were sprayed with glyphosate. There aren’t too many herbicides which would kill every blade of grass in a healthy lawn besides glyphosate.