Thanks for all the advice so far. Mom and I are newbies to all of this. Now she is having a problem with the nighttime bag. We are using the Convatec urostomy pouch, which is different from the Hollister pouch in the placement of the valve. The first night, all was fine. The second night, the pouch did not drain unless she stood up to let it go down. I called Convatec and the girl said to start with a couple inches of fluid in the pouch when she hooked up the night bag. This will reduce any air pockets. Mom did that and now finds that the first part of the night, the pouch drains well, but then she has to stand up to get it to whoosh down into the night bag. I wish the Convatec bag was like the Hollister bag, with the valve at the bottom of the bag. We are using the moldable convex wafer, which Hollister does not have. Need something easy for mom to get used to. Anyone else have this problem? Thanks.