The h°eats flameless, water-activated Self-Heating Food Warming Pad is specially designed both home or commercial use. Each pad can be used with disposable aluminum foil half-sized pans, lasagna pans, super lasagna pans, and baking pans to keep your food hot and at just-out-of-the-oven quality for up to 2 hours. h°eats is a flameless Methanol gel chafing fuel replacement. Directions: - Add 1½ cups or 350 ml of room temperature water to an empty food pan - Remove h°eats warming pad from packaging and place into pan foil side up - Place oven-hot food pan directly onto the h°eats warming pad (must be touching the heating pad) - Wait up to 10 min for full heat activation **Warning** - Do NOT add additional water to h°eats warming pad, too much water will make the product defective - Please allow up to 10 minutes for the pads to become fully activated - This product works by conduction and the top pan that has the food must be in contact with pad.