What's better than fresh guac? Free guac.

This is Chipotle's third joint venture this year with TikTok as the Mexican fast-casual chain looks to reach millennials and Gen Z customers. Even before the first TikTok challenge, organic Chipotle content kept emerging on the platform, Tressie Lieberman, Chipotle's vice president of digital and off-premise marketing told CNN Business. "We instantly knew from the reaction that this was the right opportunity to launch our TikTok partnership with a branded challenge," Lieberman said. The Halloween challenge "is our third but it's definitely the first of many more to come," Lieberman said. The Chipoltle Halloween TikTok challenge begins at 1am ET on October 26 and ends at 1am ET on November 1.

Chipotle announced Thursday that it will be offering free guac on Wednesday, July 31, in honor of National Avocado Day. The free guac only applies to digital orders for delivery and order ahead with the purchase of a regular-priced entree. In Roanoke, there's a Chipotle at Towers Shopping Center and a brand-new location near Valley View Mall. The offer is limited to one free guac topping per entree and is subject to availability. Also, a $10 minimum delivery applies and the offer is not available from third-party delivery platforms.