While on a stargazing trip, I ran out of 3M skin prep. Downtown, I found two medical supply shops—across the street from each other! Nice! Each only had the basics: bags, powder, barriers, skin prep, adhesive remover, belts, etc. Cash only. Twice the U.S. price... I always get randomly chosen for closer inspection by TSA. (Never in other countries.) I am so tired of this; now, I just yell and insult them. "You should determine whether I am carrying more than 100 ml of poop..." Only one leak while aboard an airliner. I finished emptying the bag, cleaned the skin, doused the area with stoma powder, and plugged the breach with tape. Upon landing, I changed in the private handicapped/family restroom. Some airports have first aid rooms. Cheers.