heard that people fast for weeks before ctb but their body still manage to make a mess. it's not necessary because you'll make a mess anyway and it won't matter because your dead but fasting for at least a day and going to the restroom before ctb will probably lessen it or you can try taking laxatives to help you empty your bowel, tried that, sadly, i failed hanging. i think you can have yourself found before your body starts to shit itself,unfortunately,i don't have any idea how long would it take for your body to shit itself after death, anyone knows????