Registration is open for Old Town Trick or Treat, 1-3 p.m. Saturday, Oct. 28 in Old Town Lompoc.

The event is hosted by the Lompoc Valley Chamber of Commerce and Visitors Bureau in collaboration with city of Lompoc Recreation Division.

Lompoc Valley Chamber is seeking businesses to participate in the festivities. Businesses can participate by handing out candy from their stores, or by setting up a booth in Old Town.

Old Town Trick or Treat offers an advertising and marketing tool to highlight businesses and engage with the community, the chamber said.

The chamber also invites the community to be involved in the downtown celebration by hosting a booth that includes some type of kid-friendly activity. There is no cost to participate, however space is limited.

All businesses and/or nonprofit organizations in the Lompoc Valley, including Mission Hills and Vandenberg Village, are invited to participate.

To sign up, call the chamber at 805-736-4567 or email memebrship@lompoc.com. Deadline to register is Oct. 13 to be placed on the Trick or Treat map.