My dad is wearing depends now and is still having issues with them leaking. Is it possible they are buying the wrong kind (I'm sorry I am not sure which brand they are using)? It seems to be more of an overnight issue. Do they make a daytime and a nighttime version? Has anyone tried the Depend Bed Protectors? He tends to move around on the bed so I am not sure if these would help. He also has diarrhea - can we just add an immodium pill (are they OTC or prescription?) to his daily pill routine? Would that even help? He takes about 14 different meds currently so I would be concerned about any interactions. He has trouble walking and uses a walker. He can't always make it to the bathroom in time. What products work best for bed protection?
As for the pull ups, I found Depends to be an entry level brand and not up to overnight once my mom became totally incontinent, I still liked them for fit and comfort through the day but found Tena ovenights much more absorbent. If you need more than that there are heavy duty brands like abena, attends, prevail, tranquility... more than you ever dreamed were available ;)
In my experience none of them are going to do a really good job with diarrhea because they are designed to absorb liquid not contain solids. I wouldn't try giving immodium on a regular basis without consulting the doctor and trying other methods first... there are some great websites with advice from the Crohn's and colitis community.
Have you ever thought about getting a bedside commode?
I bought a big box of underpads off Amazon made by Medline - it worked out much cheaper per pad than other underpads I looked at, and they work well, plus they go up to 36x36. (I get her Depends underwear this way too - they're $5+ cheaper per 20 pack on Amazon than from the local stores.) (Edit: I have Prime, so free shipping.)
I place the underpads under the bottom sheet on the bed, but the home support workers just put them over top, so they do get all rucked up. I also put them underneath a sheet tucked around the seat cushions of the sofa.
One of our home support workers just said to try puppy pads - she said they're exactly the same thing but much cheaper.