The Snuggle Safe heatpad is safe for your pet and easy to use. Just place the heatpad inside your microwave for 5 minutes. Place the heatpad under your pet's bedding. The thermapol interior of the heatpad goes through physical changes, resulting in a stable, even, heat temperature of about 52 degrees. This temperature is warm enough to keep your pet cozy and safe enough, not to burn your pet. This process allows the heatpad to maintain it's heat level for 12 hours.