I like using the Whisker City Cat Can Lid. I typically buy the bigger cans of cat food which will last my cats more than a day usually. To keep the the food from drying up I use these lids on the can and it fits perfectly, leaving the food fresh. Before I started using these lids, the leftover food from the can would go to waste because my cats wouldn't eat the food the next day which I'm assuming was due to the dryness of the food. Since I've been using these lids I no longer have that issue!