If you teach your decorative rat to use the toilet tray, caring for your pet will be much easier. When a pet urinates and defecates in one place specially designated for this, it is much easier to maintain the cleanliness of the cell and remove the waste products of the rat from it. To accustom the animal to the tray, place it in the part of the cage that the pet chose as a toilet. Encourage the animal every time it uses the tray for its intended purpose. When you succeed in training your pet, do not forget to clean the tray regularly, and then your pet will be willing to use it as a toilet.