Little ghosts and goblins will overtake Island businesses on Halloween Day — Thursday, Oct. 31 — as retailers welcome trick-or-treaters.

Coordinated by the Mercer Island Chamber of Commerce, this year marks the seventh annual chamber trick-or-treating. Official trick-or-treating time is 3 p.m.-5:30 pm, however, many stores continue as long as they are open.

Both the north end and south end business districts will welcome trick-or-treaters. Sponsors are Banner Bank, Sunrise Senior Living and L’Experience.

Donations for the Mercer Island Food Pantry will be accepted at Au Courant, Banner Bank, Mercer Island Martial Arts and the Mercer Island Chamber of Commerce office.

Drivers should be alert as trick-or-treaters will be wandering the streets in the waning hours of daylight.