Using the bathroom is another sensitive topic and should be approached as such.
It has been stressed many times that when caring for people with dementia strict and predictable daily routine is necessary - including set bathroom times.
Establishing same time of the day for bowel movements and toileting- in early morning, after meals and snacks, before bedtime - can help prevent incontinence. Such a routine should be created as early as possible. However, use of disposable diapers should be evaluated, because it prevents embarrassment.
As mentioned before labeling of doors is helpful - label bathroom door as well as doors to other rooms, because additional environmental clues can maximize independent toileting and make the person feel more comfortable.