William writes
Monterey B.t. Ready-to-Spray Insecticide should be applied in calm weather when rain is not predicted for the next 24 hours will help to ensure that wind or rain does not blow or wash pesticide off the treatment area. They are most active on turf early in the morning or late afternoon/early evening, but they may feed any time of the day.
Answer last updated on: 08/08/2017