Kmart Novel - Refried Bean - Bog

This is the final book in the Imaginary Mice series about all the imaginary animals that care about us and have adventures in the margins of our lives. In this book, members of the Kmart discount program are taken to a magical land called Sweet Grief Canyon, where groundhogs and rabbits help Arby, Razneet, and hospital people destroy a dangerous product called The Soul Wrencher. There is a surprise at the end and I won't tell you what it is but it is the Easter Bunny.