Boo! Books are back at your local Wendy's restaurant. For each Frosty coupon book sold in-restaurant or on the Wendy's app, Wendy's will donate 90 to support the Foundation. There is also a limited quantity available for purchase online through the Foundation. For just $1, you can help find permanent families for children waiting in foster care and enjoy five free Jr. Frosty treats through December 31, 2023. Boo! Books are valid only at participating Wendy's locations in the United States. Every Boo! Book purchased from the Foundation will support the Dave Thomas Foundation for Adoption's mission.