[header] How to potty train pet rats [title] Start by saving a tablespoon of droppings out of your rat's old cage. [step] Set it aside to put in the litter box, making sure the spoon carries no scent that could distract your rat from the litter box. [title] Clean your rat's cage thoroughly. 
[step] Put in fresh bedding and disinfect any toys or houses that might have dropping on them. [title] Take a small, shallow box and put it in the corner where your rat generally does his duty.