Hi, great info from Bob. He just about covered all bases. But I know how you must feel. I used to get 7-10 days out of my convex, Convatec ileostomy wafer/pouch. A bit less in the summer, when it was hot, or I did a lot of showering (hot water?) or swimming. It would soften the wafer. I've learned to take shorter, hot showers. But a few years ago, I noticed that the lower part of my 55-year-old stoma was pulling further back into the skin, causing a "hollow/dent" under the stoma. Hence, the leaking started. That's when I started with the convex. It helped somewhat. Then I used more "stomahesive paste," but the output leaked through that. I used the Elkin seals, and sometimes it worked and other times not. Sometimes it stays on a week, other times, I need to change 3x in one day. New medical issues... lots of gas and water-like output... Turns out to be similar to IBS (Irritable Bowel Syndrome). I've begun reacting to the sugars (even artificial ones) found in foods, fruits, and veggies. First, it causes a lot of gas, and then the body/intestine fills with lots of water. Research the FODMAP Diet, which describes the foods most likely to trigger the liquid output. I just thought my digestion had changed, but a visit to my gastro gave me an instant diagnosis. It's a trial and error search to see which foods trigger "the runs" which then eat away at the wafer... (It's like gastric acid). For me, it's limiting artificial (and regular sugars), fruits, beans, and quite a few veggies. What's left is not a healthy diet, and I'm also diabetic, so it's a balance. But in the end, my goal is to keep the wafer/appliance on... Too much gas is a symptom of "I ate the wrong thing." I hope this helps anyone who has this issue... The stoma nurses I went to were of no help at all. I've had 55 years of experience, and they didn't/couldn't suggest anything I hadn't tried... Best of luck, Marsha