The biodegradable bags used in supermarkets can vary in terms of their degree of biodegradability. Some bags are indeed biodegradable, which means that they decompose naturally in the environment under the action of micro-organisms such as bacteria or fungi, generally within a relatively short time.

However, it is true that not all biodegradable bags break down in the same way or in the same timeframe..
CSome biodegradable bags are designed to decompose more quickly than traditional plastic bags, but this can still take several months or even years.
Other bags are made from compostable materials, which means they break down more quickly when processed in industrial composting facilities.
However, if these bags are disposed of in the environment, they can take much longer to break down.
It is important to note that traditional plastic bags, which are not biodegradable, can take hundreds of years to break down in the environment.
Biodegradable bags therefore offer a relatively better alternative, even if they are not perfectly environmentally friendly.
It is advisable to consult the information provided by the supermarket or manufacturer about the biodegradable bags they offer to get a clearer idea of their degree of biodegradability and their impact on the environment.
If in doubt, please do not dispose of it in the bioswales....