Why Iris brand boxes?
We went with the Iris brand boxes for a couple of reasons. The first is they do not seem to feel compelled to change their product line and dimensions constantly like Rubbermaid and Sterilite. The second, more important reason, these boxes rock! The have nice smooth, flat interiors without the troublesome indentations or “feet” to catch feces and urates. They are a snap to clean and are quite durable. On top of all of that they are nearly transparent so you can easily see what is going on in the box.