I use the Coloplast Assura Extended Wear wafer, and it lasts an easy 7 days with daily showers.
I keep the bag on in the shower, except for the day when I remove the wafer and wash the skin around the stoma. I think it lasts so long, because it's Extended Wear.
The first couple of weeks after surgery, I would rinse out the bag and clean up my stoma several times a day. I treated it like a baby. I'd clean it, and it would poo. <<giggle>> I'd clean it again, and it would poo again. <<giggle giggle>> I finally couldn't keep up with demand and realized that it likes its little poopy environment, so I let it have its way and stay poopy! After all, it is an intestine and has never known a life without poo.
That was 18 months ago, and so far so good. Everyone is different, and we will all eventually find out what works best for us. If what you're doing is working, then keep it up! That's great!
Dx'd w/ Crohn's in '99 at age 28. Proctocolectomy and ileostomy in '06.
Pain-free, med-free, and very thankful to be healthy again :)