In a method for containing a spilled liquid, a mat is provided onto a surface. The mat includes a liquid permeable upper layer disposed above a liquid impermeable lower layer, with a watertight adhesive securing the upper layer to the lower layer. The watertight adhesive defines one or more enclosed regions between the upper and lower layers. A vessel containing liquid can be placed on the mat, accessible by an animal or human, such that liquid spilled from the vessel falls onto the mat above the one or more enclosed regions. The spilled liquid permeates through the liquid permeable upper layer onto one or more enclosed regions, where the liquid impermeable lower layer prevents further vertical permeation of the liquid while the watertight adhesive that bounds the enclosed regions inhibits lateral permeation of the liquid. The spilled liquid is thereby contained in the enclosed regions onto which it was spilled.