Shake Shack has a buy-one-get-one free deal to get customers to Halloween with a full stomach.

Customers can visit the burger chain now through Halloween to get two Double ShackBurgers for the price of one. The deal is available from Wednesday, Oct. 22, through Friday, Oct. 31, and can be redeemed by using the promo code “SPOOKY” when ordering on the app, in stores at kiosks and online.

The Double ShackBurger stacks two quarter pound patties, American cheese, lettuce, tomato and ShackSauce. The cheeseburger typically costs $11.

This is the third and final October BOGO at the fast food joint, which previously handed out SmokeShack and Chicken Shack sandwiches for the deal.

For even more discounts, customers can keep an eye on the Shake Shack app for other deals, like $1 sodas, $3 fries and $5 shakes. There are no promo codes for those offers.

Chipotle has its own tortilla-wrapped Halloween deal.

On Friday, Oct. 31, costumed customers can get a free entrée as part of Chipotle’s annual “Boorito” Deal. Rewards members who visit the chain restaurant between 3 p.m. until close will receive an offer for a $6 entrée at checkout. The reward can apply to a burrito, burrito bowl, tacos, salad or quesadilla, but there is a limit of one discounted meal per person.

Plus, now through Thursday, Oct. 30, Chipotle rewards members can redeem new “Chip-or-Treat” promos when they purchase an entrée in-restaurant or online.

Within a few hours of buying their meal, the customer will receive an email with a treat “tailored to their preference” that is valid for five days, according to a press release. Deals range like free guacamole and chips.