The small can has an inner bucket that is easy to line and just lift out the bucket and take to the compactor. The larger can has a ring that the inner plastic liner should fit around, it is a little flimsy and could be easily broken. I wished the larger can had the inner bucket for longevity sake. The cans are good looking and the sensors are very effective and the large can has an on and off switch so when you are not using the kitchen you can trun it off and save battery life. In all I like the products and the care that was taken to package them so that they arrived unscratched or dented. This is particularly useful with small children that don;t want to use a trash can. This can makes it fun to throw their own trash away!