Dominion has a program that will knock down the cicadas while helping to control mosquitoes, fleas, and ticks. In the big picture, however, cicadas are not harmful. On the contrary, mosquitoes, fleas, ticks, and spotted lanternfly are harmful and efforts should be made to control these pests. Dominion provides control of mosquitoes, spotted lanternflies, and other harmful lawn pests and we answer dozens of calls from Lancaster and York area residents.