In a message dated 8/14/00 9:33:53 PM, [log in to unmask] writes:

<< Like Dave says, because the mosquito spraying is done at dusk or at
night, when the bees are not flying, there is no real hazard to the bees. >>

Define "dusk" and how long does it last to allow applicators to spray over a
designated area? Does dusk start at 5 p.m., 6 p.m.? During the summer, bees
may forage until 7 p.m., or even later. My dictionary says it's "the darker
part of twilight esp. at night." Do the contractors use the same definition?
How long is dusk? Do applicators have so much ground to cover that they start
at 5 p.m. to be finished by nightfall?

"Dusk" is too close to the time when bees are still flying, at least to
account for human error, bureaucracy, budget constraints, etc.