Just place it on the bran floor and the small holes will collect the water on the bed and the water will become soiled in the bottom of the water soap. Water stain is transparent so you can see the contents clearly and wash them cleanly. Because it is compact, it is perfect for pickling up in the fridge or anywhere you like. Please increase the number of pieces as needed. Material: Polypropylene resin; *Compliant with self-owned standards regarding polyolefin food containers, such as polyolefin and other hygiene council (Size) Width: 1.5 inches (38 mm), Depth: 1.1 inches (27 mm), Height: 3.5 inches (90 mm), Country of Origin: Aichi Prefecture, Other) Patent (Patent No. 6083846).