Clarke has a hotline number for residents to call to report standing water, mosquito activity, get on the notification list, and ask questions:
1-800-942-2555
Clarke also has a customer portal, which provides an online option to accomplish the same thing:
https://www.clarkeportal.com/hotline
They will get a notification the day of the spray (ex: they get a notification Wednesday morning that we will be spraying Wednesday night). Notifications are same-day, as schedules are subject to change based on weather, etc.