This topic is about dealing with issues related to Convatec Natura ostomy bags that come with built-in filters. These filters are supposed to automatically vent gas, but some users find that they don't work as expected. Here are some helpful insights and advice from others who have faced similar challenges:

1. Many users have found that the Convatec built-in filters can clog quickly or allow small amounts of output to seep through, which can cause odor and stain clothing.

2. Filters tend to stop working once they come into contact with any liquid. If you have looser output, the filter might only last a few hours, whereas those with firmer output might get up to two days of use.
- A tip to help with this is to fold 3–4 squares of toilet tissue and place them in the bottom of the pouch. This can help absorb liquid and keep it away from the filter.

3. Some people have decided to stop using filtered bags altogether. Instead, they manually "burp" the pouch or switch to filter-free Convatec pouches.

4. An alternative venting option is to install an EZ Vent gas valve on a filter-free pouch.
- To do this, you can cut a small hole in the fabric cover of a Convatec pouch or order a filter-free pouch and stick the EZ Vent over the hole.
- Keep in mind that the EZ Vent is meant for one pouch only, although some users have found ways to re-glue it.

5. Other brands and products, like Coloplast SenSura Mio, have been mentioned, but they also have issues with filters clogging, especially with thicker output.

6. Additional tips include:
- Rinsing the inside of the pouch with water after emptying and gently sloshing water under the filter to clear it.
- Using a toothpick to unblock the filter opening.
- Adding a deodorant/lubricant or a teaspoon of baking soda inside the pouch to help control odor when filters fail.

Overall, many users agree that integrated filters, whether from Convatec or other brands, often don't work reliably. As a result, many prefer using non-filtered bags and either manually venting them or using aftermarket vents for more dependable gas release without leakage.