McDonald's Halloween Happy Meal buckets are back- how to get yours

For the first time in six years, the McDonald's Halloween Happy Meal pails returned to restaurants on Tuesday.

The meals are served in what fans call a Boo Bucket, which first debuted in 1986 but had vanished over the past several years.

There are three varieties of pails which feature different quirky, wicked characters: McBoo, McPunk'n and McGoblin.

The buckets, which can double as a kid's trick-or-treat pail, will be available at participating McDonald's from Oct. 18 to Oct. 31, while supplies last.

McDonald's isn't the only fast food chain trying to get customers in the spirit of spooky season. Burger King has added a Ghost Pepper Whopper to its menu for a limited time.

McDonald's also recently revealed their adult Happy Meals, which sold out quickly at a number of locations.

Adult Happy Meal includes a Big Mac or 10-piece Chicken McNuggets, french fries, a drink