A spillage-control boot apparatus for use during removal of a spin-on fluid filter from an engine block or other substrate. The boot apparatus includes a boot with a substantially cylindrical boot body, including a flared bell portion for placement surrounding a filter, and a constricted portion integrally attached to and extending from the flared bell portion, for placement closely surrounding a portion of the filter. The flared bell portion of the boot body is adapted to form an annular pocket therein when the boot is placed surrounding a cylindrical filter. The apparatus also includes an absorbent member, for placement in the flared bell portion of the boot body, for absorbing spillage from the filter base when the filter is removed from the substrate.