Bowel movement incontinency

Due to an ongoing Colitis/Crohn's disease condition which I have been experiencing for more than 3 years now, My bowel movements (with diarrhea) come on unexpectantly and without warning. As a result I have experienced many "accidents". Wearing Depend underwear lowers the frequency of the resulting messes with the resultant cleaning up after. My urinary incontinence is not as frequent as the BM incontinence.