There are some faint brown stains, which are rust stains from the drying rod that transferred during washing and drying. Used when my child was between 1 and 4 years old. Stored at home for 3 years. There were no instances of soiling, such as bedwetting, during its use. #PetToilet #Pet #Caregiving #Nursing #Bedwetting #WaterproofSheet #WaterRepellent