Many counties have now cancelled the aerial spraying to combat the fast-spreading Eastern equine encephalitis virus, largely because of heavy rains that are expected to fall. Because of this development, the spraying of the Merus 3.0 organic pesticide — which contains 5% pyrethrin — will not occur in Allegan, Barry, Berrien, Calhoun, Jackson, Kent, Lapeer, Montcalm or Newaygo counties tonight, according to the Michigan Department of Health and Human Services.

The cities of Kalamazoo and Portage will also be avoiding the aerial spraying as well. The Michigan Department of Health and Human Services say that spraying is still on schedule to begin at 8:30 p.m. in portions of Van Buren, Cass and St. Joseph counties, along with the extreme southeast corner of Kalamazoo County. However, there is no promise that spraying will definitely take place in the remaining counties. The state encourages citizens to keep an eye on their website as the day progresses to see if there are any more cancellations.