General Pest Control Spraying is the process of spraying and/or dusting the interior and exterior perimeter of a home or business, around window sills, doorways, and under sink cabinets. Spraying in closets is optional to the customer.This service is recommended to be done about every three months to control common household pests. General Spraying is effective for most ant species, American roaches, spiders, etc. For scorpions, ticks, excessive spiders, see Power Sprays. All chemicals used are safe around children and pests, after allowing 30 minutes to dry.