The summer battle against the mosquito population is ramping up in Fire Island on Monday.

Suffolk County Public Works crews will be heading to Ocean Beach and Fire Island Pines Monday night.

The Department of Health says they'll be ground-spraying a pesticide on all the streets and boardwalks between 6 and 10 p.m.

Then Tuesday night, they plan to spray in Ocean Bay Park, Seaview, Davis Park and Point O'Woods from 6 to 11:30 p.m.