This is something you should be addressing with the occupational therapist (OT) at your ALS clinic. In the meantime, here was our experience:
We tried raised toilet seats, but they did not help much or for very long. Grab bars helped more, but these, too became obsolete within a few months. For many months, toileting required assistance from someone with a Gait belt.
Eventually, however, the only working long-term solution for us was to get a rolling, tilting commode chair. The PALS is lifted out of bed or wheelchair using a divided leg sling (with head support) and then lowered onto the tilted commode chair. This is done outside of the bathroom. Then the chair is rolled into the bathroom and un-tilted, and then either (a) the PALS can void into the basin that comes with the chair, or (2) the chair can be rolled over the toilet, and the PALS can void into the toilet. Then, with the sling still on, the chair is again tilted, and the PALS is placed back into the bed or wheelchair.
Hints: Many insurance bureaucrats don't understand why a rolling, tilting commode chair is necessary and should be covered, so it is important to have the OT do a well-documented assessment and measurements for a custom chair and sling and write why it's medically necessary. If the OT has never done this, ask them to call around to other ALS clinics and talk to OTs who have had success with this.
Hint2: If you want to roll the chair over the toilet, you may need to create a splash guard and affix it to the bottom of the chair (I did this by cutting a 1 gal. plastic bucket to the desired shape and screwing it onto the chair bottom). Also, depending on the anatomy, a male PALS may need some help with aiming.
Hint 3: Besides the rolling, tilting commode chair, our other great piece of toileting equipment was the Hydrawand (handheld bidet wand) for cleaning.
To sum up, with the proper equipment, many PALS can avoid ever needing bedpans or diapers.
