The New SnuggleSafe HeatPad - Environment Friendly Allow your pet to snuggle up with up to 12 hours of safe, soothing warmth with the new SnuggleSafe Heating Pad. The plate-size pad contains no electric wires to worry about. Just place the SnuggleSafe inside your microwave, select Full Power, and set the timer according to how many watts your microwave pumps out. See the included chart for watts and times. When the microwave has finished, leave the SnuggleSafe inside for another minute. The non-toxic thermapol compound inside the pad retains heat for up to 12 hours. Now in Environmentally Safe Packaging.