Using these Catit PIXI Ice Packs is easy. First, put them in your freezer overnight until they're fully frozen. This usually takes around 12 hours at -4 to -24 degrees Celsius. Once frozen, insert the ice packs into the space under the feeding tray of your Catit PIXI Smart 6 - meal Feeder. This helps keep your cat's food fresh and cool. When using the ice packs, make sure not to place the feeder on heated floors as it can reduce the ice packs' effectiveness. To maintain the ice packs, just clean them with a mild soap and water after each use. Keep them stored in a dry place when not in use, and they'll be ready for the next time your cat needs a fresh meal.