Topic Explanation:
The discussion centers around a perceived decline in the quality of Convatec ostomy pouches, specifically the 413161 wafers and 401512 pouches. The original poster has experienced leaks due to what appears to be a change in the sealing process of the pouches, which now lack the prominent ridgeline that previously ensured a tight seal. Despite contacting Convatec and receiving replacements, the issue persists. The poster is exploring alternatives from Hollister and Coloplast and seeks feedback from others who may have experienced similar issues or have tried these alternative brands.

Advice and Insights:

1. Several users suggest reporting the issue to Convatec, providing them with the lot numbers, and sending back a used bag that leaked to get more attention from their quality control.

2. Some users have experienced similar issues with Convatec products, noting changes in the seam and overall quality, and recommend contacting Convatec for assistance.

3. Users have shared mixed experiences with alternative brands:
- Hollister pouches are noted to be noisier and possibly thinner, but some users report no problems with them.
- Coloplast products have been mentioned as having good sealing properties, but some users have experienced long wait times for customer service.

4. A few users have mentioned using duct tape to extend the wear time of pouches when they start to come apart.

5. Some users have switched to other brands due to quality issues with Convatec and have found better results, though experiences vary.

6. There is a mention of using an "Iggie clip" as a solution for issues with Hollister Velcro wearing out.

7. Users have noted that the quality of Convatec pouches has deteriorated over the years, with issues such as noisiness and lack of odor control being highlighted.

8. Some users have had success with specific products from Hollister and Coloplast, such as the Sensura Coloplast #15521 and AllKare protective barrier wipes, which provide a good seal.

9. A user mentioned that Convatec has a stoma nurse available who can provide helpful information and support.

10. There is a suggestion to try different clips and sealing methods to address leakage issues, though the original poster has already tried various clips without success.